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  • Vascular sheathing in idiopathic retinal vasculitis
    Vascular sheathing in idiopathic retinal vasculitis Category (ies): Retina, Uveitis Contributor: Jesse Vislisel, MD Photographer: Toni Venckus, CRAt Vasculitis At the time of these photographs, the patient had active vasculitis in the right eye while the left was inactive
  • Atlas Entry - Peri-Vascular Lattice Degeneration
    Peri-Vascular Lattice Degeneration Category (ies): Retina, Vitreous Contributor: Eric Chin, MD Photographer: Stefani Karakas 74-year-old female who underwent recent epiretinal membrane peel in the right eye Intraoperatively, she was found to have several small retinal tears in the periphery which were lasered for prophylaxis • BCVA: OD 20 20
  • Pigmented Paravenous Retinochoroidal Atrophy
    Funduscopic examination reveals coarse pigmentary clumps within the retina, fine pigmentary changes along the retinal veins, and bone spicule-like pigmentation, along with retinochoroidal atrophy, usually away from the optic nerve head Typically, the pigmentation extends alongside the posterior pole of the retina and into the periphery
  • Branch Retinal Vein Occlusion - University of Iowa
    HIF-1α upregulates expression of endothelin-1 and vascular endothelial growth factor (VEGF), which promotes endothelial permeability Such permeability contributes to the breakdown of the blood-retina barrier and leads to CME Thus, increased levels of VEGF are associated with a greater degree of CME and ischemia
  • EyeRounds. org: central retinal artery occlusion (CRAO)
    Discussion The patient’s classic description of painless, sudden loss of vision one day prior to presentation, and the appearance of the "cherry-red spot" on fundus examination made the diagnosis of a central retinal artery occlusion (CRAO) This elderly patient had a history of coronary artery disease s p bypass surgery as well as carotid vascular disease treated with an endartectomy on the
  • Atlas Entry - Leukemic Retinopathy
    Patients may develop dilation, tortuosity, and beading of the retinal veins; vascular sheathing; cotton-wool spots; flame-shaped hemorrhages; Roth spots; sub-hyaloid and sub-internal limiting membrane hemorrhages These changes are similar to those seen with severe anemia A 60-year-old female was referred for bilateral retinal hemorrhages
  • EyeRounds. org: Ocular Ischemic Syndrome - University of Iowa
    In the posterior segment, decreased blood flow to the retina leads to vascular insufficiency and compromise, typically manifested as intraretinal hemorrhages, which classically appear splotchy (i e , larger than typical dot blot heme seen in other conditions, such as diabetic retinopathy) and in the mid-periphery (versus diabetic retinopathy
  • Diabetic Retinopathy for Medical Students. Classification
    PDR – As mentioned earlier, the retina has a high metabolic requirement, so with continued ischemia, retinal cells respond by releasing angiogenic signals such as vascular endothelial growth factor (VEGF) Angiogenic factors, like VEGF, stimulate growth of new retinal blood vessels to bypass the damaged vessels
  • Perivascular sheathing. COMS Grading - University of Iowa
    The COMS Grading Scheme: Graded Features Perivascular sheathing White lines along the edges of the arterial or venous blood column (sheathing) or complete opacification of the venous wall (“white threads”) are the abnormalities graded The total length of vessels involved by either appearance is graded Sheathing is not graded within 500 microns of the optic disc Sheathing is to exceed
  • Atlas Entry - Ocular Toxoplasmosis - University of Iowa
    Patients with active toxoplasmic retinochoroiditis may develop retinal vasculitis with vascular sheathing and hemorrhages in response to reactions between circulating antibodies and local Toxoplasma gondii antigens





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