Journal of Otolaryngology and Ophthalmology of Shandong University ›› 2021, Vol. 35 ›› Issue (4): 76-80.doi: 10.6040/j.issn.1673-3770.0.2020.432

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A controlled Study of the accommodative parameters of eyes with uncorrected myopic anisometropia

YUE Pengcheng1,2, DU Qiuxuan1,2, KONG Ling1,2, QIAO Zhentao1,2   

  1. 1. Qingdao Eye Hospital of Shandong First Medical University, Qingdao 266071, Shandong, China;
    2. Shandong Frist Medical University & Shandong Academy of Medical Sciences / State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Shandong Eye Institute, Qingdao 266071, Shandong, China
  • Published:2021-08-05

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Abstract: Objective To study the effect of myopic anisometropia on binocular accommodative parameters. Methods The study involved 63 patients with different refractive parameters in their two eyes but no history of refractive correction for anisometropia. They were divided into anisometropia group and control group according to the difference in refractive status. Their cycloplegic refraction were measured using a comprehensive refractometer. The monocular and binocular negative relative accommodation, accommodative responses, positive relative accommodation, accommodative facilities, amplitudes of accommodation, and the differences in adjustment parameters of the two groups were analyzed. Results There were 34 patients in the anisometropia group. The monocular PRA in the eyes with higher degree was -2.10±0.88, and that of the eyes with lower degree was -2.46±0.70; the difference was statistically significant(t=2.96, P<0.05). The monocular accommodative response value of the eyes in the in the eyes with higher degree was +0.51±0.42, and that of the eyes in eyes with lower degree was +0.35±0.35, the difference was statistically significant(Z=-2.45, P<0.05). The monocular accommodative facility of the eyes in the eyes with higher degree was 4.47±2.38, and that of the eyes with lower degree was 5.53±3.03; the difference was statistically significant(t=-2.42, P<0.05). The monocular NRA in the eyes with higher degree was +2.21±0.28, and that of the eyes with lower degree was +2.21±0.40; the difference was not statistically significant(Z=-0.43, P>0.05). There were 29 patients in the control group, they were no statistically significant differences between the NRA, accommodation responses, PRA, and accommodative facilities of the two eyes in the control group(NRA: Z=-0.42, P>0.05; accommodative response: Z=-0.95, P>0.05; PRA: Z=-1.37, P>0.05; accommodative facility: Z=-0.04, P> 0.05). The binocular NRA of the anisometropia group was +2.39±1.58, whereas that of the control group was +2.24±0.31; the difference was statistically significant(Z=-2.54, P<0.01). The binocular PRA was -2.00±0.81 in the anisometropia group and -2.49±0.81 in the control group; the difference was statistically significant(Z=-2.31, P<0.05). The binocular accommodative response was +0.38±0.30 in the anisometropia group and +0.41±0.30 in the control group; the difference was not statistically significant(Z=-0.58, P>0.05). The binocular flexibility was 4.57±2.50 in the anisometropia group and 4.59±2.18 in the control group, and the difference was not statistically significant(Z=-0.04, P>0.05). Conclusion Myopic anisometropia may cause abnormal interbinocular accommodative parameters.

Key words: Myopia, Anisometropia, Accommodation, Vision function parameters, Uncorrected

CLC Number: 

  • R778.1
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