𝐌𝐢𝐜𝐫𝐨𝐚𝐧𝐞𝐮𝐫𝐲𝐬𝐦𝐬 ● Microaneurysms are usually the first ophthalmoscopically detectable sign of diabetic retinopathy ● Hallmark of nonproliferative diabetic retinopathy (NPDR) ● Mild NPDR- Microaneurysms only ● Also seen in - retinal vein occlusions, radiation retinopathy, hypertensive retinopathy
𝐏𝐚𝐭𝐡𝐨𝐥𝐨𝐠𝐲: ● Focal saccular outpouchings of the capillary wall due to pericyte loss ● Arise from deep part of inner retinal capillary plexus, and are present in the inner nuclear layer 𝐅𝐞𝐚𝐭𝐮𝐫𝐞𝐬: ● Appear as small round red dots - usually seen at the posterior pole, especially temporal to fovea ● 10- 100 microns in diameter ● Only > 30 microns is visible ophthalmoscopically (better on red free illumination) ● < 30 microns can be seen on FFA and hence more microaneurysms are seen on FFA than fundus ● Hyperfluroscent with late leakage on FFA Image from Rajan Eye Care Hospital #ophthalmology #ophthal #retina #diabeticretinopathy #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident #ophthalmologyresidency