Journal
ACTA OPHTHALMOLOGICA
Volume 94, Issue 8, Pages E709-E715Publisher
WILEY
DOI: 10.1111/aos.13084
Keywords
choroidal thickness; enhanced depth imaging optical coherence tomography; high myopes; visual acuity
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PurposeTo investigate the influence of choroidal thickness (CT) on visual acuity (VA) in young persons with extremely high myopia. MethodsWe conducted a case-control study of young men with extremely high myopia and controls with emmetropia recruited from a mandatory medical eye review for employment purposes. Retinal and choroidal imaging was performed using enhanced depth imaging (EDI) spectral-domain optical coherence tomography (SD-OCT). ResultsWe included 105 extremely high myopic subjects with spherical equivalent (SE) -10 dioptre (D) or worse and 50 emmetropic subjects with SE less than 0.5 D. The mean SE was -11.562.04 D (range, -10 to -23 D) for myopic group and 0.14 +/- 0.25 D for emmetropic group. The mean age of included myopic and emmetropic subjects was 21.51 +/- 1.22years and 21.96 +/- 0.89years, respectively. In the univariate analysis, subfoveal CT was significantly associated with best-corrected visual acuity (BCVA) (=-0.039, p=0.015). However, in the multiple linear regression analysis, after adjusting for SE and presence of any pathological myopia lesions such as posterior staphyloma, lacquer cracks or chorioretinal atrophy, subfoveal CT was not independently associated with BCVA (p=0.937). ConclusionExtremely high myopic eyes had thinner choroid, but CT was not an independent predictor of VA. Other factors related to myopia are likely responsible for the diminished VA in young extremely high myopic eyes.
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