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Journal Article
Research Support, N.I.H., Extramural
Fundus changes in central retinal vein occlusion.
Retina 2015 January
PURPOSE: To investigate systematically the retinal and optic disk changes in central retinal vein occlusion (CRVO) and their natural history.
METHODS: This study comprised 562 consecutive patients with CRVO (492 nonischemic [NI-CRVO] and 89 ischemic CRVO [I-CRVO] eyes) seen within 3 months of onset. Ophthalmic evaluation at initial and follow-up visits included recording visual acuity, visual fields, and detailed anterior segment and fundus examinations and fluorescein fundus angiography.
RESULTS: Retinal and subinternal limiting membrane hemorrhages and optic disk edema in I-CRVO were initially more marked (P < 0.0001) and took longer to resolve (P < 0.015) than that in NI-CRVO. Initially, macular edema was more marked in I-CRVO than that in NI-CRVO (P < 0.0001) but did not significantly differ in resolution time (P = 0.238). Macular retinal epithelial pigment degeneration, serous macular detachment, and retinal perivenous sheathing developed at a higher rate in I-CRVO than that in NI-CRVO (P < 0.0001). Ischemic CRVO had more retinal venous engorgement than NI-CRVO (P = 0.003). Fluorescein fundus angiography showed significantly more fluorescein leakage, retinal capillary dilatation, capillary obliteration, and broken capillary foveal arcade (P < 0.0001) in I-CRVO than NI-CRVO. Resolution time of CRVO was longer for I-CRVO than NI-CRVO (P < 0.0001).
CONCLUSION: Characteristics and natural history of fundus findings in the two types of CRVO are different.
METHODS: This study comprised 562 consecutive patients with CRVO (492 nonischemic [NI-CRVO] and 89 ischemic CRVO [I-CRVO] eyes) seen within 3 months of onset. Ophthalmic evaluation at initial and follow-up visits included recording visual acuity, visual fields, and detailed anterior segment and fundus examinations and fluorescein fundus angiography.
RESULTS: Retinal and subinternal limiting membrane hemorrhages and optic disk edema in I-CRVO were initially more marked (P < 0.0001) and took longer to resolve (P < 0.015) than that in NI-CRVO. Initially, macular edema was more marked in I-CRVO than that in NI-CRVO (P < 0.0001) but did not significantly differ in resolution time (P = 0.238). Macular retinal epithelial pigment degeneration, serous macular detachment, and retinal perivenous sheathing developed at a higher rate in I-CRVO than that in NI-CRVO (P < 0.0001). Ischemic CRVO had more retinal venous engorgement than NI-CRVO (P = 0.003). Fluorescein fundus angiography showed significantly more fluorescein leakage, retinal capillary dilatation, capillary obliteration, and broken capillary foveal arcade (P < 0.0001) in I-CRVO than NI-CRVO. Resolution time of CRVO was longer for I-CRVO than NI-CRVO (P < 0.0001).
CONCLUSION: Characteristics and natural history of fundus findings in the two types of CRVO are different.
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