Preretinal haemorrhage an Flame shaped haemorrhage Preretinal (Subhyaloid) hemorrhages: Clinical features: Occur either in the level of subhyaloid space between posterior vitreous face and retina or under internal limiting membrane. Localized vitreous gel detachment may occur. Horizontal blood level or boat-shaped hemorrhage is usually apparent, which obscures the underlying retina. Fluorescein angiography demonstrates blockage of underlying details in areas of ... Read More »
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Vitreomacular Traction with Impending Macular Hole By Dr.Henry Reis 65yo Japanese female, VA 20/60- ...
(a)Diabetic tractional detachment of the macula. There is a thick fibrovascular membrane lying on th...
Roles of Glaucomatous Optic Disc Diagnosis Primary open angle glaucoma is a common eye disease chara...
Non-rhegmatogenous (Exudative) Retinal Detachment Key Facts • Elevation of retina from accumulatio...
Diabetic Retinopathy Microaneurysms Microaneurysms are localized out-pouchings, mainly saccular, of ...
Macular ischemia The foveal avascular zone was measured angiographically in 144 subjects with diabetic retinopathy and 27 control subjects. Statistical significance was defined as P < 0.01. Quantitatively, the foveal avascular zone was significantly smaller in control eyes (median = 0.405 mm2) than in eyes with diabetic retinopathy, and smaller in eyes with background diabetic retinopathy (BDR; median = 0.737 ... Read More »
Subretinal fluid can also originate directly from the choroid such as in VKH (VogtKoyanagi-Harada) disease where massive primary choroidal inflammation spills over to the retina and causes profuse leakage of liquid through the retinal pigment epithelium (RPE) forming exudative retnal detachments (ERD). Other diseases that can produce ERD include sympathetic ophthalmia and posterior scleritis Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Subretinal ... Read More »
Exudative retinal detachments produce RPE changes charcterised by loss of RPE cells causing small areas of window defects as well as clumping of cells causing masking effect. This alternation of loss and clumping of RPE gives a mottled aspect on early angiographic frames due to increased transmission of background choroidal fluorescence (window effect) in some areas together with decreased transmission ... Read More »
Differantiate between Deep Retinal Hemorrhages and Subretinal Hemorrhages Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Deep Retinal Hemorrhages and Subretinal Hemorrhages Read More »
Roths spots, white centred hemorrhages .. Severe anemia , leukemias are possible aetiology Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Roths spots Read More »
Juxtafoveal telangectasia and mottled fundus Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Juxtafoveal telangectasia and mottled fundus Read More »
Lamellar macular hole with epiretinal membrane and an operculum Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Lamellar macular hole with epiretinal membrane and an operculum Read More »
Tractional RD threatening or involving the macula .Vitrectomy is always combined with internal panretinal photocoagulation to prevent postoperative neovascularization that may cause vitreous haemorrhage or rubeosis iridis. Extramacular tractional RD may be observed without surgery because, in many cases, it remains stationary for a long time provided proliferative retinopathy has been controled Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) Tractional RD Threatening ... Read More »
Venous beading (arrows) in a case of proliferative diabetic retinopathy. Source: Ophthalmology Notes Ophthalmology Atlas(Photos of cases) proliferative diabetic retinopathy. Read More »