Evaluation of retinal digital images by a general practitioner

Area of Science:

• Ophthalmology
• Diabetology
• Cardiology

Background:

• Diabetes and hypertension are prevalent diseases with potential retinal complications.
• Retinal involvement in these conditions often leads to long ophthalmologist waiting lists.
• Early detection of retinal changes is crucial for managing these systemic diseases.

Purpose of the Study:

• To evaluate the agreement between general practitioners and ophthalmologists in assessing digital fundus images.
• To determine if general practitioners can reliably identify diabetic or hypertensive retinopathy from retinal images.
• To explore the potential of general practitioner screening to reduce specialist referrals.

Main Methods:

• A total of 776 fundus images from 194 patients were analyzed.
• Both general practitioners and ophthalmologists independently inspected images for signs of diabetic or hypertensive retinopathy.
• Agreement was statistically assessed using contingency tables and the kappa index.

Main Results:

• High agreement was observed between general practitioners and ophthalmologists.
• Kappa values ranged from 0.79 to 1.00, indicating good to excellent agreement.
• Specific kappa values were 0.80 for diabetes-only, 1.00 for hypertension-only, and 0.79 for combined diseases.

Conclusions:

• General practitioners can effectively interpret digital fundus images for diabetic and hypertensive retinopathy.
• This capability suggests a viable strategy for pre-screening patients and reducing unnecessary specialist consultations.
• Implementing this approach could improve patient flow and access to ophthalmology care.