I believe the self-service kiosks would be very much feasible. There are two key components: (1) automated non-mydriatic (not requiring dilation of the pupil) retinal imaging and (2) automated grading of images using AI.

The technology is there but there would be more work needed for a self-service kiosk to be FDA approved. Another thing that is not clear is whether it is commercially a good idea at this time, given that only a single disease (diabetic retinopathy) is approved. I can see a future where one can use such kiosks to look for multiple conditions and assess risks for various diseases including cardio-vascular disease, neurodegenerative diseases, stroke, and hypertension.

Since it's not dilated, it's possible