Glenn J Jaffe1, Gui-Shuang Ying2, Cynthia A Toth3, Ebenezer Daniel2, Juan E Grunwald2, Daniel F Martin4, Maureen G Maguire2. 1. Department of Ophthalmology, Duke University, Durham, North Carolina. Electronic address: jaffe001@mc.duke.edu. 2. Department of Ophthalmology, University of Pennsylvania, Philadelphia, Pennsylvania. 3. Department of Ophthalmology, Duke University, Durham, North Carolina. 4. Cole Eye Institute, Cleveland Clinic, Cleveland, Ohio.
Abstract
PURPOSE: To evaluate associations of morphologic features with 5-year visual acuity (VA) in the Comparison of Age-related Macular Degeneration Treatments Trials (CATT). DESIGN: Cohort study within a randomized clinical trial. PARTICIPANTS: Participants in CATT. METHODS:Eyes with age-related macular degeneration-associated choroidal neovascularization (CNV) and VA between 20/25 and 20/320 were eligible. Treatment was assigned randomly to ranibizumab or bevacizumab and to 3 dosing regimens for 2 years and was at the ophthalmologists' discretion thereafter. MAIN OUTCOME MEASURES: Visual acuity, thickness and morphologic features on OCT, and lesion size and foveal composition on fundus photography (FP) and fluorescein angiography (FA). RESULTS:Visual acuity and image gradings were available for 523 of 914 participants (57%) alive at 5 years. At 5 years, 60% of eyes had intraretinal fluid (IRF), 38% had subretinal fluid (SRF), 36% had subretinal pigment epithelium (RPE) fluid, and 66% had subretinal hyper-reflective material (SHRM). Mean (standard deviation) foveal center thickness was 148 μm (99) for retina, 5 μm (21) for SRF, 125 μm (107) for subretinal tissue complex, 11 μm (33) for SHRM, and 103 μm (95) for RPE + RPE elevation. The SHRM, thinner retina, greater CNV lesion area, and foveal center pathology (all P < 0.001) and IRF (P < 0.05) were independently associated with worse VA. Adjusted mean VA letters were 62 for no pathology in the foveal center; 61 for CNV, fluid, or hemorrhage; 65 for non-geographic atrophy (GA); 64 for nonfibrotic scar; 53 for GA; and 56 for fibrotic scar. Incidence or worsening of 8 pathologic features (foveal GA, foveal scar, foveal CNV, SHRM, foveal IRF, retinal thinning, CNV lesion area, and GA area) between years 2 and 5 was independently associated with greater loss of VA from years 2 to 5 and VA loss from baseline to year 5. CONCLUSIONS: Associations between VA and morphologic features previously identified through year 1 were maintained or strengthened at year 5. New foveal scar, CNV, intraretinal fluid, SHRM and retinal thinning, development or worsening of foveal GA, and increased lesion size are important contributors to the VA decline from years 2 to 5. A significant need to develop therapies to address these adverse pathologic features remains.
RCT Entities:
PURPOSE: To evaluate associations of morphologic features with 5-year visual acuity (VA) in the Comparison of Age-related Macular Degeneration Treatments Trials (CATT). DESIGN: Cohort study within a randomized clinical trial. PARTICIPANTS: Participants in CATT. METHODS: Eyes with age-related macular degeneration-associated choroidal neovascularization (CNV) and VA between 20/25 and 20/320 were eligible. Treatment was assigned randomly to ranibizumab or bevacizumab and to 3 dosing regimens for 2 years and was at the ophthalmologists' discretion thereafter. MAIN OUTCOME MEASURES: Visual acuity, thickness and morphologic features on OCT, and lesion size and foveal composition on fundus photography (FP) and fluorescein angiography (FA). RESULTS: Visual acuity and image gradings were available for 523 of 914 participants (57%) alive at 5 years. At 5 years, 60% of eyes had intraretinal fluid (IRF), 38% had subretinal fluid (SRF), 36% had subretinal pigment epithelium (RPE) fluid, and 66% had subretinal hyper-reflective material (SHRM). Mean (standard deviation) foveal center thickness was 148 μm (99) for retina, 5 μm (21) for SRF, 125 μm (107) for subretinal tissue complex, 11 μm (33) for SHRM, and 103 μm (95) for RPE + RPE elevation. The SHRM, thinner retina, greater CNV lesion area, and foveal center pathology (all P < 0.001) and IRF (P < 0.05) were independently associated with worse VA. Adjusted mean VA letters were 62 for no pathology in the foveal center; 61 for CNV, fluid, or hemorrhage; 65 for non-geographic atrophy (GA); 64 for nonfibrotic scar; 53 for GA; and 56 for fibrotic scar. Incidence or worsening of 8 pathologic features (foveal GA, foveal scar, foveal CNV, SHRM, foveal IRF, retinal thinning, CNV lesion area, and GA area) between years 2 and 5 was independently associated with greater loss of VA from years 2 to 5 and VA loss from baseline to year 5. CONCLUSIONS: Associations between VA and morphologic features previously identified through year 1 were maintained or strengthened at year 5. New foveal scar, CNV, intraretinal fluid, SHRM and retinal thinning, development or worsening of foveal GA, and increased lesion size are important contributors to the VA decline from years 2 to 5. A significant need to develop therapies to address these adverse pathologic features remains.
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