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  • Title: Five-year incidence and progression of myopic maculopathy in a rural Chinese adult population: the Handan Eye Study.
    Author: Lin C, Li SM, Ohno-Matsui K, Wang BS, Fang YX, Cao K, Gao LQ, Hao J, Zhang Y, Wu J, Wang NL, Handan Eye Study Group.
    Journal: Ophthalmic Physiol Opt; 2018 May; 38(3):337-345. PubMed ID: 29691931.
    Abstract:
    PURPOSE: To determine the cumulative five-year incidence and progression of myopic maculopathy in a rural Chinese adult population. METHODS: The Handan Eye Study was a population-based longitudinal study. In 2006, 6830 subjects aged 30+ years participated in this study (baseline). Five years later, 5394 subjects (follow-up rate: 85.3%) took part in the follow-up study. Participants had a detailed eye examination, including visual acuity, standardized refraction and fundus photography according to a similar protocol at both baseline and follow-up. Myopic maculopathy was defined as any of the following signs: diffuse chorioretinal atrophy, patchy chorioretinal atrophy, macular atrophy, lacquer cracks and myopic choroidal neovascularization at the posterior pole. Parapapillary atrophy was assessed separately. RESULTS: Of 5394 participants, 5078 (10 021 eyes) had gradable fundus photographs. Over the five years, four participants (five eyes) developed new myopic maculopathy, with an eye-specific incidence of 0.05% (95% CI, 0.02-0.10%). Among the 51 eyes with myopic maculopathy at baseline, the progression occurred in 18 eyes (35.3%), with new signs of patchy chorioretinal atrophy in 11 eyes (21.6%), diffuse chorioretinal atrophy in seven eyes (13.7%), lacquer cracks in three eyes (6.9%), macular atrophy in three eyes (6.9%) and myopic choroidal neovascularization in two eyes (3.9%). By multivariable analysis, female gender (OR, 9.14; p = 0.004) and higher educational level (OR, 8.24; p = 0.004) were associated with a higher risk of progression of myopic maculopathy, whereas lower myopia at baseline (OR, 0.79; p < 0.0001) and hypertension (OR, 0.21; p = 0.017) were associated with a reduced risk. CONCLUSIONS: The five-year incidence of myopic maculopathy was 0.05% in rural Chinese adults aged 30+ years. The progression rate in participants with myopic maculopathy was 35.3%, indicating the importance of regular follow-up for these patients.
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