Comparsion of corrected visual quality of two types of intraocular contact lens for high myopia / 眼科新进展

ABSTRACT

Objective To assess the optical quality after implantation of the intraocular contact lens with and without a central hole for high myopia.Methods A total of 23 patients (41eyes),including 11 patients (21 eyes) implanted with V4 ICL (V4 ICL group) and 12 patients (20 eyes) with V4 c ICL implantation (V4 c ICL group) were enrolled in this research.Six months after operation,slit lamp microscope was used to check the anterior segment,and LogMAR chart was to test uncorrected visual acuity (UCVA) and best corrected visual acuity (BCVA).Moreover,automatic refractometer was to measure the spherical equivalent (SE) and astigmatic diopter before and after the operation.OQAS parameters included objective scattering index (OSI),modulation transfer function (MTF),Stryrby (SR),OQAS values (OV100％,OV20％,OV9％) at different contrast level were examined.Results In both groups,the parameters of UCVA (logMAR),BCVA (logMAR),SE and astigmatic diopter at 6 months after operation were significantly improved compared with before operation,with significant difference (all P ＜ 0.05).There was no siguificant difference in the UCVA,BCVA,SE and astigmatic diopter between the two groups before operation and 6 months after operation (all P ＞ 0.05).Moreover,the values of MTFcutoff,SR,and OQAS visual parameters (OV100％,OV20％ and OV9％) at 6 months after operation were significantly higher than those before operation between the two groups,and the difference was statistically significant (all P ＜ 0.05),while OSI was lower than preoperative data,but there was no significant difference in OSI between the two groups (P ＜ 0.05).There was no significant difference in OQAS visual quality parameters,including OSI,MTFcutoff,SR,and OV100％,OV20％ and OV9％,between the two groups (all P ＞ 0.05).Conclusion It is safe and effective of the two types of intraocular contact lens implantation for correction of high myopia,and V4 c ICL can achieve the similar visual quality to the traditional V4 ICL.