OphtAI: our offer
Fundus photography quality check
- OphtAI checks in real time for submitted photos’ quality to verify it can be interpreted.
- Hence, the users know while screened persons are still present and available if they have to capture new images.
- This function allows using any fundus camera on the market, as long as its photos’ quality is sufficient.
Grading
- OphtAI is able to grade DR’s severity stage
>>This function is very important as it allows knowing the appropriate course of action and the emergency level for the patient to meet an ophthalmologist.
Lesion Mapping
- A technology developed by our scientists allows lesions to be geolocated.
- This is known as the Heatmap, or attention map.
- It indicates the weight of each pixel in OphtAI’s decision-making process.
- This is represented graphically by a light intensity that varies proportionally.
Glaucoma Example – Slide to discover the “gradual borders” type heatmap.
Level of confidence
- Depending on the proportion of images receiving a given score for each ground truth (usually, healthy or not for a given disease) on a database whose cases are balanced as a function of the disease’s prevalence ratio, we process the confidence level for the image score.
- A confidence level equates Positive predictive value for a positive diagnosis and a Negative Predictive Value for a negative diagnosis.
- So, if the patient is to be refered to an ophthalmologist (CNN output score >= threshold, confidence matches the probability for the patient actually being affected by the disease; this probability is low close to the threshold and reaches 100% when the score increases..
PDF Report
- Our report is a Medical Device certified PDF allowing for diagnosis,
- available from any internet browser without external application,
- it is customizable and allows on demand anonymization, per disease results and confidence levels integration, and lesion mapping and importance integration.
Performance
Diabetic Retinopathy | Glaucoma | AMD | |
Sensibility | 99% | 96.5% | 92.5% |
Specificity | 87% | 95.4% | 87% |
Response time | <3s | <3s | <3s |
Compatible retinographs
OphtAI is compatible with any standard fundus examination image produced by a standard field retinograph (45-60°) in full colour (RGB), without filtering, in lossless JPEG or DICOM format. OphtAI does not process corneal images or retinal images from fluorescein angiography or other markers.
Technical information
OphtAI is a Class IIa Medical Device certified in the European Union (compliant with ISO 13485), by Health Canada, and in the United Kingdom under the UKCA register. Registration with the Swissdamed register (Switzerland) is currently underway.
OphtAI is deployed at a health data hosting provider and is developed by Evolucare Technologie, an ISO 27001-certified company. This hosting provider is located in France.
The solution complies with the GDPR and, for security and anonymisation purposes, does not store any patient-related data. Patient images and data are deleted after processing.