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Effect of pathological myopia on biomechanical properties:a study by ocular response analyzer

International Journal of Ophthalmology(English edition) 2015年第2期8卷 365-368页

作者： veysi oner Mehmet Tas Erdal Ozkaya Yavuz Oruc Department of Ophthalmology Recep Tayyip Erdogan University Medical School Department of Ophthalmology Malatya State Hospital Department of Ophthalmology Recep Tayyip Erdogan University Education and Research Hospital

AIM: To evaluate the ocular response analyzer(ORA)measurements of patients with pathological myopia in comparison with those of emmetropic control subjects,and to investigate the correlation between these ORA measurements and spherical equivalent(SE).METHODS: Measurements of 53 eyes of 53 subjects with pathological myopia(SE >-6.00 D) were compared with those of 60 eyes of 60 emmetropic controls. Corneal hysteresis(CH), corneal resistance factor(CRF),noncontact tonometer intraocular pressure(IOPg), and corneal-compensated IOP(IOPcc) were obtained for each subject. The refractive error value was determined as SE via a cycloplegic refraction ***: The mean age was 54.1±18.9y(ranging from5 to 88) in the pathological myopic group and 56.2±19.0y(ranging from 6 to 89) in the control group. There were no significant differences between the groups concerning age and sex. CH and CRF were significantly lower in the pathological myopic group than in the control group(P <0.001, P =0.005, respectively). IOPcc and IOPg were significantly higher in the pathological myopic group than in the control group(P <0.001, P =0.009,respectively). There were significantly positive correlations between CH and SE(r =0.565, P <0.001) and between CRF and SE(r =0.364, P =0.007). There were significantly negative correlations between IOPcc and SE(r =-0.432, P =0.001) and between IOPg and SE(r =-0.401,P =0.003).CONCLUSION: The present study displayed that pathological myopia affected biomechanical properties measured by ORA. The results of corneal biomechanicalproperties measured by ORA may need to be appreciated by taking refraction into account. Further, pathological myopia might be related with the increased IOP.

关键词： corneal hysteresis corneal resistance factor intraocular pressure ocular response analyzer pathological myopia

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