๐๐ฐ๐ง๐ต ๐๐น๐ถ๐ฅ๐ข๐ต๐ฆ๐ด/ ๐๐ฐ๐ต๐ต๐ฐ๐ฏ ๐๐ฐ๐ฐ๐ญ ๐๐ฑ๐ฐ๐ต๐ดโฃ โฃ - Nerve fibre layer infarctsโฃ โฃ - Occur secondary to local ischemia from pre-capillary retinal arteriole obstruction โ obstruction of axoplasmic flow in the nerve fibre layer โ swelling of nerve fibres โ white fluffy appearance โ cotton wool spots โฃ
โฃ โฃ ๐๐๐ฎ๐ฌ๐๐ฌ: โฃ โฃ - Vascular Diseases : Diabetic Retinopathy, Hypertensive Retinopathy, Vein occlusions, Ocular Ischemic Syndrome, Papilledema, Radiation Retinopathyโฃ โฃ - Hematological Disorders: Anemia, Leukemia, Sickle Cells Anemiaโฃ โฃ - Infectious Diseases: HIV Retinopathy, Neuroretinitisโฃ โฃ - Collagen vascular disorders: Giant Cell Arteritis, Behcetโs, SLE etcโฃ โฃ โฃ ๐๐ฉ๐ฉ๐๐๐ซ๐๐ง๐๐:โฃ โฃ -Small, yellow white/ grayish white elevated lesions with a feathery border with striations parallel to the nerve fibres in the superficial retinaโฃ โฃ -Obscures the underlying blood vesselโฃ โฃ -Commonly in posterior poleโฃ โฃ -Can resolve in weeks to months leaving a small depression known as โDepression Signโโฃ โฃ -Other findings such as microaneurysms, retinal hemorrhages, hard exudates etc to be notedโฃ โฃ ๐๐ข๐ฌ๐ญ๐จ๐ฅ๐จ๐ ๐ฒ:โฃ โฃ โCytoid Bodiesโโฃ โฃ - Looks like cells but are eosinophilic segments of ganglion cell axons that are swollen because of defective axoplasmic flowโฃ โฃ - Packed with accumulations of mitochondria and other intracellular materialโฃ โฃ โฃ ๐ ๐ ๐:โฃ โฃ Hypofluorescence due to capillary non-perfusion in area corresponding to the cotton wool spot as well as blockage by axoplasm stasisโฃ โฃ ๐๐๐: โฃ โฃ Hyper-reflective lesion in inner retinal layers โฃ โฃ ๐ฐ๐ฐ๐ฐ.๐จ๐ฉ๐ก๐ญ๐ก๐๐ฅ๐ฆ๐จ๐๐ฒ๐ญ๐๐ฌ.๐๐จ๐ฆโฃ โฃ Image from Rajan Eye Care Hospital โฃ #ophthalmology #ophthal #retina #diabeticretinopathy #hypertensiveretinopathy #cottonwoolspots #doctor #health #medical #vision #education #optometry #medicalstudent #optometrist #medicine #eye #ophtho #ophthalmologist #ophthalmo #med #medicaleducation #ophthalmologyresident#ophthalmologyresident #ophthalmologyresidency#ophthalmologyresidency