Carolina Madeira1, Gonçalo Godinho2, Rodrigo Vilares-Morgado2,3, João Beato2,4, João Pinheiro-Costa2,4, Ângela Carneiro2,4, Fernando Falcão-Reis2,4, Manuel Falcão2,4. 1. Department of Ophthalmology, Centro Hospitalar e Universitário de São João, Porto, Portugal. tania.carolina.madeira@gmail.com. 2. Department of Ophthalmology, Centro Hospitalar e Universitário de São João, Porto, Portugal. 3. Faculty of Medicine, University of Porto, Porto, Portugal. 4. Department of Surgery and Physiology, Faculty of Medicine of University of Porto, Porto, Portugal.
Abstract
PURPOSE: To assess the long-term risk of geographic atrophy (GA) progression after cataract surgery. METHODS: Subjects with GA secondary to AMD followed for at least 1 year with fundus autofluorescence imaging and with at least two visits at our centre were included. Patients with wet AMD, disciform scar, past history of intravitreal injections or laser treatment, other maculopathies and with poor quality images were excluded. GA area at baseline and at follow-up visit was measured. Three study groups were defined according to their phakic status: (A) pseudophakia, (B) phakic and (C) phacoemulsification surgery performed during the study. Differences of GA area progression were compared between these study groups. In addition, comparison between GA progression rate in group (C) before and after the surgery was performed. The enlargement rate (ER) was calculated for lesion size after transforming the measurements to the square-root scale. RESULTS: A total of 92 eyes of 92 patients were enrolled. Median follow-up time was 4 [1-10] years. Regarding the eye's phakic status, 29 (31.5%) were pseudophakic and 63 (68.5%) were phakic; of these, 22 underwent phacoemulsification during the study. Overall, the median baseline and follow-up area of GA were 1.42 [0.04-32.10] mm2 and 6.48 [0.25-47.40] mm2, respectively. The ER was similar between phakic and pseudophakic eyes (0.18 [0.01-1.03] vs 0.15 [0.01-0.65] mm/year, p = 0.62). In patients that underwent cataract surgery during the study, the GA ER remained stable (0.13 [0.01-0.92] vs 0.14 [0.01-0.63] mm/year, p = 0.43). CONCLUSION: These results suggest that cataract surgery does not increase the risk of pre-existing GA progression. Therefore, cataract surgery seems safe and a potential therapeutic weapon to improve visual acuity and consequently quality of life in GA patients.
PURPOSE: To assess the long-term risk of geographic atrophy (GA) progression after cataract surgery. METHODS: Subjects with GA secondary to AMD followed for at least 1 year with fundus autofluorescence imaging and with at least two visits at our centre were included. Patients with wet AMD, disciform scar, past history of intravitreal injections or laser treatment, other maculopathies and with poor quality images were excluded. GA area at baseline and at follow-up visit was measured. Three study groups were defined according to their phakic status: (A) pseudophakia, (B) phakic and (C) phacoemulsification surgery performed during the study. Differences of GA area progression were compared between these study groups. In addition, comparison between GA progression rate in group (C) before and after the surgery was performed. The enlargement rate (ER) was calculated for lesion size after transforming the measurements to the square-root scale. RESULTS: A total of 92 eyes of 92 patients were enrolled. Median follow-up time was 4 [1-10] years. Regarding the eye's phakic status, 29 (31.5%) were pseudophakic and 63 (68.5%) were phakic; of these, 22 underwent phacoemulsification during the study. Overall, the median baseline and follow-up area of GA were 1.42 [0.04-32.10] mm2 and 6.48 [0.25-47.40] mm2, respectively. The ER was similar between phakic and pseudophakic eyes (0.18 [0.01-1.03] vs 0.15 [0.01-0.65] mm/year, p = 0.62). In patients that underwent cataract surgery during the study, the GA ER remained stable (0.13 [0.01-0.92] vs 0.14 [0.01-0.63] mm/year, p = 0.43). CONCLUSION: These results suggest that cataract surgery does not increase the risk of pre-existing GA progression. Therefore, cataract surgery seems safe and a potential therapeutic weapon to improve visual acuity and consequently quality of life in GA patients.
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