Repeatability of in-vitro optical quality measurements of intraocular lenses with a deflectometry technique effect of the toricity  

作　　者：Teresa Ferrer-Blasco Alberto Dominguez-Vicent Santiago Garcia-Lazaro Maria Amparo Diez-Ajenjo Jose F.Alfonso Jose J.Esteve-Taboada 

机构地区：[1]Department of Optics and Optometry and Visual Science,University of Valencia, Valencia 46100, Spain [2]Clinica Optometrica, Fundacio Lluis Alcanyis Universitat de Valencia, Valencia 46020, Spain [3]Surgery Department, Fernandez-Vega Ophthalmological Institute, Oviedo 33012, Spain [4]School of Medicine, University of Oviedo, Oviedo 33006, Spain

出　　处：《International Journal of Ophthalmology(English edition)》2018年第7期1139-1144,共6页国际眼科杂志（英文版）

基　　金：Supported in part by the“Grups d’InvestigacióEmergents”Grant funded by the Generalitat Valenciana(GV/2015/046);the“Atraccióde talent”research scholarship(Universitat de València)awarded to Alberto DomínguezVicent(UV-INV-PREDOC13-110412)

摘　　要：AIM： To evaluate the repeatability of an optical device for measuring the Zernike coefficients of toric intraocular lenses（IOLs） and assess whether its toricity has any impact in its repeatability. METHODS： An experienced technician used the NIMO TR1504 to measure the Zernike coefficients 30 times for an aperture of 4.50 mm for all lenses included. The IOLs included were divided into two group： toric and nontoric ones. The cylindrical powers of the toric lenses included in the present study were 1.00, 1.50, 2.25, 3.00 and 3.75 D. Finally, the repeatability of the NIMO TR1504 was described in terms of within subject standard deviation（Sw） and repeatability limit. RESULTS： The Sw was smaller than 0.011 μm for both lens groups and all Zernike coefficients, and the difference between both groups was smaller than 0.004 μm for all Zernike coefficients. Regarding the repeatability limit, this value was smaller than 0.025 μm for the toric lens group, and smaller than 0.031 μm for the non-toric lens one for all Zernike coefficients. Furthermore, the maximum difference between both lens groups was 0.010 μm. CONCLUSION： The repeatability of the NIMO TR1504 to measure the optical quality is high and independent of the lens toricity. These results reflect that this system is robust and could be used to measure the in-vitro optical quality of either toric or non-toric IOLs.AIM： To evaluate the repeatability of an optical device for measuring the Zernike coefficients of toric intraocular lenses（IOLs） and assess whether its toricity has any impact in its repeatability. METHODS： An experienced technician used the NIMO TR1504 to measure the Zernike coefficients 30 times for an aperture of 4.50 mm for all lenses included. The IOLs included were divided into two group： toric and nontoric ones. The cylindrical powers of the toric lenses included in the present study were 1.00, 1.50, 2.25, 3.00 and 3.75 D. Finally, the repeatability of the NIMO TR1504 was described in terms of within subject standard deviation（Sw） and repeatability limit. RESULTS： The Sw was smaller than 0.011 μm for both lens groups and all Zernike coefficients, and the difference between both groups was smaller than 0.004 μm for all Zernike coefficients. Regarding the repeatability limit, this value was smaller than 0.025 μm for the toric lens group, and smaller than 0.031 μm for the non-toric lens one for all Zernike coefficients. Furthermore, the maximum difference between both lens groups was 0.010 μm. CONCLUSION： The repeatability of the NIMO TR1504 to measure the optical quality is high and independent of the lens toricity. These results reflect that this system is robust and could be used to measure the in-vitro optical quality of either toric or non-toric IOLs.

关 键 词：in-vitro measurements optical quality intraocular lens REPEATABILITY 

分 类 号：R77[医药卫生—眼科]