Objective To investigate difference of retinal light sensitivity between high myopia subjects and low myopia to emmetropia subjects in the macular areas. Methods This descriptive study enrolled subjects from the Department of Optometry, Eye Hospital of Wenzhou Medical University, and campus volunteers, from November 2015 to May 2016. Clinical data were recorded and the subjects were divided into a high myopia group with 31 cases (31 eyes) and a control group with 30 cases (30 eyes). Retinal light sensitivity was measured in the central 20° of the macula using a microperimeter. The macular area covered by the microperimeter was divided into three rings, including central, inner, and outer rings. The rings were further divided into nine areas (A1-A9). Data in each area were compared by independent t-test between the two groups. The relationship between retinal light sensitivity and axial length was assessed by Pearson correlation analysis. Results The average retinal light sensitivity of the macula was reduced in the high myopia group compared to the control group (t=4.60, P<0.001). In the inner and outer rings, the retinal light sensitivity of the high myopia group was reduced (t=3.30, P=0.002; t=3.63, P=0.001 respectively). For all three rings, the sensitivity was reduced in A2 (t=2.02, P=0.047), A4 (t=3.68, P=0.001), A5 (t=3.05, P=0.004), A6 (t=2.17, P=0.034), A7 (t=2.49, P=0.016), A8 (t=3.40, P=0.002), and A9 (t=4.35, P<0.001). Retinal sensitivity was inversely correlated with the axial length (r=-0.477, P<0.001). Conclusion Retinal sensitivity of the macular area was reduced in high myopia subjects with normal corrected visual acuity. The decreased sensitivity was more obvious in the outer ring and was correlated with increased axial length.
吴秋艳,陈绮,谭凡,程丹,沈梅晓,瞿佳. 高度近视患者黄斑区视网膜光敏感度的变化[J]. 中华眼视光学与视觉科学杂志, 2017, 19(3): 146-151.
WU Qiuyan,CHEN Qi,TAN Fan,CHENG Dan,SHEN Meixiao,QU Jia. Retinal light sensitivity in different areas of the macula in high myopia. Chinese Journal of Optometry Ophthalmology and Visual science, 2017, 19(3): 146-151. DOI: DOI:10.3760/cma.j.issn.1674-845X.2017.03.005
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