Notifications
CRENO Clinical Portal Dashboard Patients Screening Analytics PATIENTS 248 ↑ 12 this month SCREENINGS 1,204 ↑ 38 this week URGENT 6 Needs review RETINAL SCAN — M. Johnson Moderate DR · 79% confidence AI ANALYSIS No DR Mild Moderate Severe Proliferative MODERATE DR Review in 3–6 months SCREENING TREND — 30 DAYS RECENT SCREENINGS MJ M. Johnson Moderate DR MODERATE AC A. Clarke No DR NO DR
Caribbean Medical Technology  ·  Research-Driven

Affordable medical technology for Caribbean healthcare

CRENO builds AI-powered screening tools, connected devices, and clinical software for resource-limited health systems — starting with diabetic retinopathy. One image. A clinical-grade result in under 30 seconds.

82%
Weighted F1 Score
97%
Severe DR Recall
<30s
AI Result Time
creno.health / imaging
AI Classification
Proliferative DR
Stage 5 — Urgent
Confidence
97%
⚑ Urgent referral required
Patients
24
Screenings
118
Priority
3
Why CRENO

Early detection saves sight.

98% of severe vision loss from DR is preventable. CRENO puts clinical-grade retinal screening in the hands of any primary care doctor — no specialist required.

AI Classification
5-class DR grading in under 30 seconds with 82% weighted F1.
Live Vitals
Bluetooth sensors capture SpO₂, heart rate & temperature.
PDF Reports
Instant clinical reports and referral letters for every screening.
Appointments
Full scheduling and patient management built in.
Macro photograph of a human eye — the anatomy CRENO screens for diabetic retinopathy
Screening in progress — result in 28s
Meet CRENO

Medical technology, engineered for where it's needed most

CRENO develops affordable medical technologies for resource-limited healthcare systems — combining smartphone-based diagnostics, connected devices, and clinical AI into tools any primary care clinic can deploy.

01Built at the University of the West Indies
02Advancing through the FutureHEALTH Incubator
03Designed for Caribbean populations first
Our Solutions

One ecosystem.
Four ways in.

Hardware, software, and AI designed to work together — and priced for public health budgets.

Clinician using a tablet to review digital diagnostics

Portable Retinal Screening System

Smartphone-based fundus imaging with a 3D-printed optical adapter. Specialist-grade screening from any exam room.

Learn more

AI Clinical Platform

Five-class DR grading, patient records, analytics, appointments, and one-click PDF reports — in one clinical portal.

Learn more

Connected Vitals Hardware

A pocket-sized Bluetooth module capturing SpO₂, heart rate, temperature, and estimated blood pressure at the point of screening.

Learn more

Future Technologies

New point-of-care diagnostics and connected devices in active research — extending the platform beyond eye care.

Explore the ecosystem
Clinical Workflow

From patient to referral in five steps

No ophthalmologist on-site. No specialist equipment. CRENO fits inside the visit your clinic already runs.

Step 01

Patient

Registered in the CRENO app during a routine primary care visit.

Step 02

Retinal Image Capture

Fundus photo taken with the smartphone adapter; vitals captured over Bluetooth.

Step 03

AI Analysis

Five-class DR severity grading with a confidence score, in under 30 seconds.

Step 04

Clinical Review

The doctor confirms the result on the portal alongside vitals and history.

Step 05

Referral

Urgent cases are flagged and a referral-ready PDF report is generated in one click.

Platform Preview

A clinical platform built for speed and precision

Real-time AI results, patient records, analytics, and referrals — in a single unified interface.

97% Confidence · Proliferative DR
Real-time Vitals Connected
CRENO Clinical Portal — Dr. Harrison
Clinical
Dashboard
Patients
Retinal Imaging
Appointments
Tools
Analytics
Reports
Dashboard Overview
Total Patients
24
Screenings
118
High Priority
3
Recent Screenings
MJ
M. Johnson Severe DR
AC
A. Clarke No DR
RT
R. Thomas Moderate DR
Retinal Analysis
AI Result
Proliferative DR — Stage 5
97%
Patient Management AI Analysis Reports Appointments Analytics Cloud Storage
Why it matters

Diabetic retinopathy is the leading cause of preventable blindness

The Caribbean has among the highest diabetes prevalence in the world — and one of the lowest ratios of ophthalmologists to patients. Most DR is caught only after irreversible damage. Screening earlier changes that.

537M
adults living with diabetes globally — Caribbean regions disproportionately affected
1 in 3
people with diabetes will develop diabetic retinopathy — often without symptoms
98%
of severe vision loss from DR is preventable with timely screening and treatment
<30s
is all it takes for CRENO's AI to classify a retinal image
Who we serve

Built for every level of the health system

From a single exam room to a national screening programme, CRENO scales with the people who use it.

Healthcare provider and patient in a primary-care clinical setting Primary Care

Clinics

Add specialist-grade screening to routine visits — no new staff, no capital equipment.

Hospital Network

Hospitals

Triage referrals with AI-graded urgency so ophthalmology time goes to the patients who need it most.

Public Health

Ministries of Health

Deploy population-scale screening with built-in analytics on prevalence, coverage, and outcomes.

Health scientist reviewing patient data at a clinical workstation Clinicians

Healthcare Professionals

Confidence scores, patient history, and one-click reports — decision support that respects clinical judgment.

Inside CRENO

An ecosystem, end to end

Every layer — optics, sensors, AI, and cloud — is designed in-house to work as one system. Scroll to explore.

📷

Imaging Hardware

3D-printed smartphone optics engineered for fundus photography.

Macro photograph of a blue circuit board — on-device AI and computer vision
🧠

Artificial Intelligence

EfficientNetV2-S deep learning, threshold-optimized for clinical recall.

☁️

Cloud Platform

Firebase and GCP infrastructure with real-time sync and offline support.

📊

Clinical Analytics

Screening rates, severity trends, and cohort insights for programme teams.

Automated laboratory instruments in a genomics research lab
🔬

Research

Peer-reviewed methodology, developed with university clinical supervision.

🩺

Future Medical Devices

The next generation of affordable diagnostics, in active development.

Future Vision

More than retinopathy

"To make specialist-level disease detection accessible to every clinic in the Caribbean — and eventually, the wider world — regardless of resources, infrastructure, or specialist availability."

Standard retinal AI tools frequently underperform on darker fundus pigmentation. CRENO is built for Afro-Caribbean populations first — because affordable medical technology should start with the people it serves.

Testimonials

Trusted by clinicians and health researchers

"CRENO dramatically reduces the time between screening and clinical decision. For our rural clinics, having AI-assisted DR grading available instantly changes how we manage diabetic patients."
DR
Dr. Rachel Bowen
Family Physician, Kingston, Jamaica
"The integration of Bluetooth vitals with retinal screening in a single workflow is exactly what primary care in the Caribbean has needed. The platform is intuitive and the AI results are actionable."
SM
Dr. Samuel Mitchell
Medical Officer, Trinidad & Tobago
"From a public health perspective, CRENO represents the kind of scalable, low-cost screening solution that can meaningfully reduce preventable blindness across our region."
PA
Prof. Angela Prescott
Public Health Researcher, UWI
FAQ

Common questions about CRENO

CRENO's EfficientNetV2-S model achieves a weighted F1 score of 82% across five DR severity classes, with a 97% recall rate for Severe and Proliferative DR — the cases where timely referral is most critical. Post-hoc threshold optimization ensures Moderate DR recall reaches 79%, minimizing clinically meaningful missed diagnoses.
CRENO requires a smartphone (Android or iOS) running the CRENO mobile app, a lightweight 3D-printed optical adapter for fundus imaging, and the custom ESP32 Bluetooth vitals sensor module. No expensive ophthalmology equipment is needed. The web clinical portal works in any modern browser.
The mobile app supports offline data entry and image capture. Images are queued for upload and AI analysis when connectivity is restored. Core patient records are cached locally. The web portal requires an internet connection to access the Firebase-backed database and AI backend.
All patient data is stored in Google Firebase with role-based access controls enforced at the database rule level. Retinal images are stored in Firebase Storage with private access tokens. The AI backend is hosted on Google Cloud Platform. Data handling is aligned with HIPAA best practices and Caribbean data protection standards.
CRENO has three role types: Doctors/Clinicians who access the full clinical dashboard; Patients who can view their own results, appointments, and health goals; and System Administrators who manage doctor approvals and platform accounts. All accounts are reviewed and approved before access is granted.
Get In Touch

Request access or schedule a demonstration

Whether you represent a ministry of health, a research institution, a hospital network, or a primary care clinic — we'd like to hear from you.

Or sign in directly →

Firebase-secured data
HIPAA-aligned handling
UWI-developed technology
FutureHEALTH Incubator

Ready to Modernize
Retinal Screening?

Access the CRENO clinical portal to start screening patients, reviewing AI results, and generating reports — built for primary care providers across the Caribbean.

The CRENO Ecosystem

Everything we build,
built to work together

CRENO is not a single device. It's an ecosystem of affordable medical technologies — optics, sensors, AI, and clinical software — designed as one system for resource-limited healthcare.

Clinician using a tablet to review digital diagnostics

Portable Retinal Screening System

Our flagship product — smartphone fundus imaging, Bluetooth vitals, and clinical AI in one portable kit.

Explore the product

Clinical Software Platform

The web portal and mobile app where screening, review, reporting, and patient management happen.

Explore the platform

Hardware & Accessories

The optical adapter, 20D lens, vitals module, and supporting accessories that make up the physical kit.

Browse the catalogue
Researcher examining samples under a microscope in a research laboratory

Research & Innovation

The peer-reviewed science behind the system — model development, validation, and academic collaboration.

See the research
Future Technologies

The next chapter is already in development

The same approach — low-cost hardware, clinical AI, and connected software — applied to new diagnostic problems.

Coming Soon

Next-gen vitals wearable

Continuous monitoring for chronic disease management between clinic visits.

Coming Soon

Point-of-care diagnostics

Applying the same low-cost optics and AI approach to new screening targets.

Coming Soon

Regional screening network

Connecting clinics, hospitals, and specialists across the Caribbean on one platform.

Portable Retinal
Screening System

Specialist-grade diabetic retinopathy screening from a smartphone. Designed for primary care. Priced for public health.

3D-printed optical adapterClips over the smartphone camera
Smartphone captureWorks on standard Android & iOS devices
AI-assisted screening5-class DR grading with confidence score
Cloud-connectedSynced to the CRENO clinical portal
AI CLASSIFICATION Moderate DR confidence 78% CRENO Bluetooth vitals module
<30s
Capture to AI result
82%
Weighted F1 score
97%
Severe DR recall
5
DR severity classes
4
Vitals per screening
1×
Smartphone required
Overview

One kit replaces a referral

Standard fundus cameras cost tens of thousands of dollars and need specialist operators. This system reduces the screening step to hardware most clinics already own — a smartphone.

Capture anywhere

The 3D-printed optical adapter and 20D condensing lens turn a smartphone into a portable fundus camera — no fixed installation, no darkroom.

Grade instantly

Images upload to the cloud, where an EfficientNetV2-S model returns a five-class DR severity grade with a confidence score in under 30 seconds.

Act immediately

Results appear on the clinical portal with vitals and history. Urgent cases are flagged, and referral-ready PDF reports generate in one click.

Clinical Workflow

Five steps, one visit

The full pathway — from registration to referral — fits inside a routine primary care appointment.

Patient

Registered in the CRENO app with demographics and history.

Image Capture

Fundus photo via the smartphone adapter; vitals over Bluetooth.

AI Analysis

Five-class grading with confidence, in under 30 seconds.

Clinical Review

The doctor confirms on the portal with full context.

Referral

Urgent cases flagged; PDF report generated in one click.

Hardware Overview

Three pieces of hardware.
Zero specialist equipment.

Every physical component is designed in-house to be affordable, repairable, and replaceable.

Optical adapter

3D-printed housing that aligns the smartphone camera, lens, and illumination.

20D condensing lens

The same optical standard used in indirect ophthalmoscopy — proven, available, affordable.

Bluetooth vitals module

ESP32-based sensor pod for SpO₂, heart rate, temperature, and estimated blood pressure.

Technical Specifications

Under the hood

AI model
EfficientNetV2-S deep convolutional network with test-time augmentation
Training dataset
APTOS 2019 — 3,662 clinician-graded fundus images
Classification
5 severity classes: No DR · Mild · Moderate · Severe · Proliferative
Performance
82% weighted F1 · 97% Severe DR recall · threshold-optimized Moderate recall
Result time
Under 30 seconds from upload to classification
Image capture
Smartphone camera + 20D condensing lens + 3D-printed optical adapter
Vitals
Heart rate, SpO₂ (MAX30102) · infrared temperature (MLX90614) · estimated blood pressure from pulse wave features
Connectivity
Bluetooth (vitals module) · Wi-Fi or mobile data (cloud sync) · offline capture with queued upload
Software
Android & iOS mobile app · browser-based clinical portal · PDF report generation
Infrastructure
Firebase (auth, database, storage) · Google Cloud Platform AI backend
Gallery

In the field

Who it's for

Real-world use, at every level

The same kit serves a rural clinic's Tuesday screening day and a ministry's national programme.

For clinics

Screen diabetic patients during routine visits instead of adding names to a referral backlog. No specialist equipment, no new hires, and analytics that show programme impact.

For doctors

AI decision support with transparent confidence scores — never a black box. Full patient context, urgent-case flagging, and one-click referral reports keep clinical judgment in charge.

For ministries of health

A screening programme that deploys on smartphones, reports population-level data, and costs a fraction of conventional fundus camera infrastructure.

FAQ

Common questions

The model achieves a weighted F1 score of 82% across five DR severity classes, with 97% recall for Severe and Proliferative DR — the cases where timely referral matters most. Threshold optimization lifts Moderate DR recall to 79%. Every result includes a confidence score, and a clinician always makes the final call.
A smartphone (Android or iOS) running the CRENO app, the 3D-printed optical adapter with 20D lens, and the Bluetooth vitals module. The clinical portal runs in any modern browser. No ophthalmology equipment is required.
Yes. The mobile app supports offline registration and image capture; images queue and upload automatically when connectivity returns. Core patient records are cached locally on the device.
CRENO is clinical decision support, not a replacement for clinicians. Every AI grade is reviewed by the treating doctor on the portal, alongside the image, vitals, and patient history, before any clinical action is taken.
Roadmap

Where the product goes next

In Development

Improved capture guidance

On-screen pupil alignment assistance to make high-quality capture easier for any operator.

In Development

Expanded validation

Broader clinical testing on Caribbean populations to strengthen the evidence base.

Exploring

Additional eye conditions

Research into extending the AI pipeline beyond diabetic retinopathy.

The Clinical Software Platform

Where screening becomes care. One connected system for doctors, patients, and administrators — on the web and on mobile.

97% Confidence · Proliferative DR
Real-time Vitals Connected
CRENO Clinical Portal — Dr. Harrison
Clinical
Dashboard
Patients
Retinal Imaging
Appointments
Tools
Analytics
Reports
Dashboard Overview
Total Patients
24
Screenings
118
High Priority
3
Recent Screenings
MJ
M. Johnson Severe DR
AC
A. Clarke No DR
RT
R. Thomas Moderate DR
Retinal Analysis
AI Result
Proliferative DR — Stage 5
97%
Capabilities

Everything a screening programme needs, nothing it doesn't

AI Analysis
Five-class DR severity grading with confidence scoring, threshold-optimized recall, and side-by-side image review in a fullscreen lightbox with zoom and pan.
<30s
Patient Management
Full registry with demographics, screening history, and longitudinal tracking.
Appointments
Scheduling synced to the patient app with reminders and completion tracking.
Reports
One-click PDF referrals, clinical summaries, and patient handouts.
Analytics
DR prevalence, screening rates, and clinical trends by cohort — chart-driven dashboards.
Cloud Sync
Firebase-backed real-time sync between mobile and web, with offline support.
Patient Portal
Patients view results, download summaries, manage appointments, and track doctor-assigned goals.
Role-Based Access Control
Separate secure portals for clinicians, patients, and administrators — each with purpose-built workflows and data access aligned to their role in the care pathway.
Doctor Dashboard

Triage at a glance

Urgent cases surface first. KPIs, recent screenings, and priority flags give clinicians the state of their patient panel in seconds — then one click opens the full case.

Priority queue ordered by AI-graded severity
Screening history and vitals in one view
Fullscreen retinal viewer with zoom and pan
Patient Portal

Patients stay in the loop

Every patient gets their own secure view: screening results explained clearly, downloadable PDF summaries, upcoming appointments, and health goals assigned by their doctor.

Results and history, in plain language
Appointment management with reminders
Doctor-assigned goals tracked over time

See the platform
with your own data

Sign in if your clinic already has access, or request a walkthrough with the CRENO team.

Hardware & Accessories

Engineered to be affordable.
Designed to be beautiful.

Every physical component of the CRENO system, from optics to sensors — designed in-house, built to be repaired and replaced, and made to work as one kit.

Core Kit

Smartphone Optical Adapter

A 3D-printed housing that clips over the smartphone camera, holding the condensing lens and illumination in precise optical alignment. It's the component that turns a phone into a fundus camera.

In the ecosystem: the adapter is the physical bridge between the patient's eye and the CRENO app — every screening starts here.

3D-printed housingTool-free attachmentLocally reproducible
Core Kit

20D Condensing Lens

The optical heart of the system: a 20-diopter condensing lens, the same standard ophthalmologists use in indirect ophthalmoscopy. Proven optics, globally available, and a fraction of the cost of a dedicated fundus camera.

In the ecosystem: paired with the adapter, it forms the aerial retinal image the smartphone camera captures.

20 diopterClinical-standard opticsSeated in adapter housing
Core Kit

Bluetooth Vitals Module

A pocket-sized ESP32-based sensor pod with an OLED display. It captures pulse oximetry and heart rate via a MAX30102 sensor, infrared temperature via MLX90614, and estimates blood pressure from pulse wave features — streaming everything to the app over Bluetooth.

In the ecosystem: vitals attach automatically to each screening, giving clinicians a fuller physiological picture.

ESP32 · BluetoothMAX30102 · MLX90614128×64 OLED displayHR · SpO₂ · Temp · est. BP
Accessory

LED Illumination System

Controlled, diffuse illumination for consistent fundus image quality across lighting conditions — so a screening in a bright rural clinic and one in a dim exam room produce comparable images for the AI.

In the ecosystem: consistent illumination means consistent input to the model, which means consistent grading.

Diffuse, even outputIntegrates with adapter
Accessory

Tripod Mounting System

A stable mount for the phone-and-adapter assembly, freeing both of the operator's hands to guide the patient and manage fixation. Especially useful for high-volume screening days.

In the ecosystem: steadier capture, sharper images, higher first-attempt success rates.

Hands-free operationStandard tripod threadAdjustable height
Accessory

Protective Carrying Case

Foam-fitted protection for the full kit — adapter, lens, vitals module, and cables — built for the realities of travel between clinics on Caribbean roads.

In the ecosystem: one case is one deployable screening station, ready to move.

Custom foam insertsFull kit in one case
Future Accessories

The kit keeps growing

New accessories in exploration — designed with the same principles of affordability and field-readiness.

Coming Soon

Field power kit

Extended battery options for full-day outreach screening away from reliable power.

Coming Soon

Next-generation optics

Refinements to the adapter and lens assembly for wider field of view.

Technology

The engineering
behind the ecosystem

Optics, artificial intelligence, and cloud infrastructure — each layer designed for the constraints of resource-limited healthcare, and for each other.

Optics

Clinical optics, consumer hardware

The imaging path borrows from indirect ophthalmoscopy: a 20D condensing lens forms an aerial image of the retina, and the smartphone camera — held in precise alignment by the 3D-printed adapter — captures it. Controlled LED illumination keeps image quality consistent across environments.

Proven optical standard, no proprietary lenses
Adapter geometry locks alignment automatically
Artificial Intelligence

A model tuned for the cases that matter

An EfficientNetV2-S network, trained on the APTOS 2019 dataset of 3,662 clinician-graded fundus images, classifies each image into five DR severity levels. Test-time augmentation stabilizes predictions, and post-hoc threshold optimization deliberately trades raw accuracy for higher recall on clinically important grades.

82% weighted F1 across five classes
97% recall on Severe DR after optimization
Confidence score reported with every grade
Cloud Platform

Firebase and Google Cloud, working together

Firebase handles authentication, the real-time database, and encrypted image storage with role-based security rules enforced at the database level. The AI model runs on a Google Cloud Platform backend, returning classifications to the app and portal the moment they're ready.

Real-time sync between mobile app and portal
Offline capture with queued upload
Security & Privacy

Patient data, treated like it matters

Security isn't a feature — it's the default posture of every layer of the system.

Role-based access

Clinicians, patients, and administrators each see only what their role requires — enforced in database security rules, not just the interface.

Private image storage

Retinal images live in Firebase Storage behind private access tokens. No public URLs, ever.

Reviewed account access

Every clinician account is reviewed and approved before it can access patient data.

Aligned with best practice

Data handling follows HIPAA-aligned practices and Caribbean data protection standards.

Curious about
the science?

The technology page shows how it works. The research page shows why we trust it.

Research & Validation

Built on evidence,
validated in the open

CRENO began as university research with clinical supervision, and the science stays central: transparent metrics, honest limitations, and validation before claims.

82%
Weighted F1 across five DR severity classes
97%
Severe DR recall after threshold optimization
79%
Moderate DR recall, up from 61% pre-optimization
3,662
Clinician-graded images in the APTOS 2019 training set
The AI Model

Methodology you can interrogate

The classifier is an EfficientNetV2-S network trained on APTOS 2019 with test-time augmentation. Rather than optimizing headline accuracy, we applied post-hoc threshold optimization to prioritize recall on the grades where a missed diagnosis costs sight — lifting Moderate DR recall from 61% to 79% and Severe DR recall to 97%.

Every prediction ships with a confidence score
Designed with attention to Afro-Caribbean fundus pigmentation, where standard tools underperform
Macro photograph of a microprocessor — CRENO's on-device AI
Programme

Where the work stands

An honest snapshot — including the parts still in progress.

Submitted

Conference research

An extended abstract on the system's methodology and results has been submitted to the CRAS conference.

Validation in Progress

Clinical testing

Structured validation of the end-to-end system in Caribbean primary care settings is underway.

Publication Coming Soon

Peer-reviewed publication

A full write-up of the model, optics, and clinical workflow is in preparation.

Collaboration

Research doesn't happen alone

CRENO grew out of an academic environment and keeps those roots.

University of the West Indies

Developed as a biomedical engineering capstone research project at UWI with clinical supervision — and refined there ever since.

FutureHEALTH Incubator

CRENO is advancing from research prototype to deployable product through the FutureHEALTH Incubator programme.

Open to partners

We welcome academic partnerships, clinical validation sites, and public health collaborations across the region.

Future Studies

What we want to prove next

Planned

Regional dataset validation

Evaluating model performance on locally collected Caribbean fundus images.

Planned

Workflow outcome studies

Measuring the impact on screening rates and referral timeliness in real clinics.

Exploring

Beyond retinopathy

Research into extending the pipeline to additional eye conditions.

About CRENO

Sight shouldn't depend
on your postcode

"To make specialist-level disease detection accessible to every clinic in the Caribbean — and eventually, the wider world — regardless of resources, infrastructure, or specialist availability."

Why CRENO exists

A solvable problem, left unsolved

The Caribbean carries some of the highest diabetes prevalence in the world, alongside one of the lowest ratios of ophthalmologists to patients. Most diabetic retinopathy here is discovered only after irreversible damage — not because it can't be detected, but because the tools to detect it were never designed for this environment.

CRENO was founded on a simple conviction: 98% of severe vision loss from DR is preventable with timely screening, and "timely" should not require a specialist, a darkroom, or a five-figure camera.

Philosophy

Three principles, no exceptions

Every design decision — hardware, software, and science — answers to these.

Affordability first

If a public clinic can't afford it, it doesn't ship. Smartphones, standard lenses, 3D-printed parts, and open infrastructure keep the cost floor low by design.

Built for the region

Designed for Afro-Caribbean populations, intermittent connectivity, and real clinic workflows — not adapted to them as an afterthought.

Clinical rigor

Transparent metrics, clinician-in-the-loop decisions, and validation before claims. The AI supports doctors; it never replaces them.

The Journey

From capstone to company

Research

Born at the University of the West Indies

CRENO began as a biomedical engineering capstone research project: a smartphone-based retinal screening system with clinical AI, developed under clinical supervision.

Prototype

A working end-to-end system

The optics, vitals hardware, AI backend, mobile app, and clinical portal were built and integrated into a single functioning workflow.

Incubation

FutureHEALTH Incubator

CRENO joined the FutureHEALTH Incubator to make the leap from research prototype to deployable healthcare product.

Now

Validation in progress

Clinical testing, conference research, and platform refinement — building the evidence base for wider deployment.

Ahead

The Caribbean, then the world

Regional deployment of retinal screening — and the same ecosystem approach applied to new diagnostics for resource-limited health systems everywhere.

Build this
with us

Whether you run a clinic, a ministry programme, a research group, or a fund — there's a place for you in this story.

Newsroom

News & Updates

Milestones, research progress, and announcements from the CRENO team.

Research

Extended abstract submitted to the CRAS conference

The methodology and results behind CRENO's retinal screening system have been submitted for presentation to the surgical and interventional robotics research community.

Programme

CRENO joins the FutureHEALTH Incubator

The team is advancing from research prototype to deployable product through the FutureHEALTH Incubator programme.

Milestone

Integrated prototype: imaging and vitals in one workflow

Smartphone fundus capture, Bluetooth vitals, and cloud AI grading now run as a single end-to-end screening flow.

Platform

Clinical portal improvements

Ongoing refinements across the doctor dashboard, patient portal, reporting, and analytics — shaped by clinician feedback.

Clinical

Validation programme underway

Structured clinical validation in Caribbean primary care settings is in progress. Results will be shared here as they mature.

Stay Tuned

More announcements coming soon

Conference presentations, validation results, and company updates will appear here.

Clinical Command Center
Good morning, Doctor
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patients
screenings
appointments
Today's Work
What needs your attention right now
Priority Patients
Highest-risk results needing review
Recent Screenings
Latest AI analyses
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Today's Appointments
Today
Recent Activity
Latest events across your patients

Patients

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Retinal Imaging

Upload a new image or select a previous screening

Run AI analysis
Drag & drop fundus image
Supports JPG, PNG
Vitals at screening (optional)
All screenings
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Analytics

Live data from Firestore

Total screenings
DR positive rate
Urgent referrals
Active patients
DR class distribution
AI model performance
82%
Accuracy
0.82
F1 score
79%
Mod recall
97%
Sev recall
Per-class recall
No DR
89%
Mild DR
71%
Moderate DR
79%
Severe DR
97%
Proliferative
83%
EfficientNetV2-S · APTOS 2019 · Post-hoc threshold optimisation
Screenings over time

Reports

Build, preview and manage clinical screening reports

Report contents
Select a patient to load details
Options
Report preview
Select a patient to preview the report
Recent Reports
Reports you've generated
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Appointments

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Today
Upcoming
Completed
Cancelled
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Check-up Requests

Review patient follow-up requests and link approvals

Pending requests
Scheduled
Link requests
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Patient Health Portal
Welcome back
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screenings
upcoming appointments
Screenings
Total
Last Result
Upcoming
Appointments
Latest Screening
Most recent AI analysis
Next Appointment
Upcoming schedule
My Vitals
Latest recorded
Vitals Over Time
Health trends from your screenings
Heart rate (bpm)
SpO₂ (%)
Temperature (°C)
Blood pressure (systolic)

Screening results

All retinal screenings performed by your doctor

History

Appointments

Your upcoming and past appointments

All appointments

Check-up Requests

Request a follow-up with your provider and track responses

New request
Your provider will be notified and can accept, decline, or propose a new time.
My requests

My report

A personal summary of your latest screening

Options
This is an unofficial personal summary for your own records.
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Patient Education

Understanding Diabetic Retinopathy

What your result means and what to do next

What is diabetic retinopathy?

Diabetic retinopathy (DR) is an eye condition caused by damage to the blood vessels in the retina due to prolonged high blood sugar. It is one of the leading causes of vision loss in working-age adults, but when caught early it is highly treatable.

Regular retinal screening is the single most effective way to detect DR before symptoms appear.
Severity levels explained
No DR No signs detected. Continue annual screening and maintain good blood sugar control.
Mild DR Early vessel changes. Monitor blood glucose closely. Screen every 6–12 months.
Moderate DR More significant changes. Tighter glucose and blood pressure control needed. See your doctor soon.
Severe DR Significant retinal damage. Urgent referral to an ophthalmologist is required.
Proliferative Most advanced stage. Abnormal vessels growing. Immediate ophthalmology care needed to prevent vision loss.
How to protect your vision
Control blood sugar
Keep HbA1c below 7% where possible
Regular check-ups
Attend all screenings, even if vision seems fine
Blood pressure
Target below 130/80 mmHg
Take medications
Do not skip diabetes or BP medications
System Administration
CRENO Admin Console
Manage doctor approvals, registrations, and platform accounts
Doctors pending:
System operational
Registered Doctors
Pending Approvals
Registered Patients

Doctor Approvals

Manage doctor account requests

Pending Doctor Approvals
Review and approve new clinician account requests
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