TY - JOUR
T1 - Subjective and objective refractions in eyes with extended-depth-of-focus intraocular lenses using echelette optics
T2 - clinical and experimental study
AU - Ota, Yuka
AU - Minami, Keiichiro
AU - Oki, Shinichi
AU - Bissen-Miyajima, Hiroko
AU - Okamoto, Keiichiro
AU - Nakashima, Masaya
AU - Tsubota, Kazuo
N1 - Funding Information:
The study was supported in part by Johnson & Johnson Surgical Vision. We thank Mr. Young Hyun Kim of Tomey Corporation for assisting with the modification of a lensmeter and measurements.
Publisher Copyright:
© 2020 The Authors. Acta Ophthalmologica published by John Wiley & Sons Ltd on behalf of Acta Ophthalmologica Scandinavica Foundation
PY - 2021/9
Y1 - 2021/9
N2 - Purpose: To evaluate differences in subjective and objective refractions in eyes with extended-depth-of-focus intraocular lenses (EDOF IOLs) using echelette optics, and the effect of the light wavelength used during examinations. Methods: In the prospective study, subjective and objective refractions of 128 eyes of 64 patients were examined 3 months after implantation of the EDOF IOLs (ZXR00V, Johnson & Johnson Surgival Vision). Objective refractions were measured using an autorefractor with a near-infrared (NIR) light source. Clinical differences in the spherical, cylindrical and spherical equivalent (SE) refractions between the subjective and objective refractions were evaluated. Then, lens powers of monofocal, EDOF and diffractive bifocal IOLs in the use of a 850-nm light source were measured experimentally for using a lensmeter, and the differences from the monofocal IOLs were calculated. Results: The mean objective refractions were more myopic (p < 0.001) than the subjective refractions; the differences in the spherical, cylindrical and SE refractions were −0.71, −0.26 and −0.84 dioptre, respectively. Experimental investigation resulted that there was the mean difference of 0.83 D with the EDOF from monofocal IOLs at 850 nm, while the difference was −0.20 D with bifocal IOLs. Conclusions: The diffractive EDOF IOLs using echelette gratings inherently induced constant differences in the subjective and objective refractions, which arose from the chromatic difference in IOL powers for the visible and NIR lights.
AB - Purpose: To evaluate differences in subjective and objective refractions in eyes with extended-depth-of-focus intraocular lenses (EDOF IOLs) using echelette optics, and the effect of the light wavelength used during examinations. Methods: In the prospective study, subjective and objective refractions of 128 eyes of 64 patients were examined 3 months after implantation of the EDOF IOLs (ZXR00V, Johnson & Johnson Surgival Vision). Objective refractions were measured using an autorefractor with a near-infrared (NIR) light source. Clinical differences in the spherical, cylindrical and spherical equivalent (SE) refractions between the subjective and objective refractions were evaluated. Then, lens powers of monofocal, EDOF and diffractive bifocal IOLs in the use of a 850-nm light source were measured experimentally for using a lensmeter, and the differences from the monofocal IOLs were calculated. Results: The mean objective refractions were more myopic (p < 0.001) than the subjective refractions; the differences in the spherical, cylindrical and SE refractions were −0.71, −0.26 and −0.84 dioptre, respectively. Experimental investigation resulted that there was the mean difference of 0.83 D with the EDOF from monofocal IOLs at 850 nm, while the difference was −0.20 D with bifocal IOLs. Conclusions: The diffractive EDOF IOLs using echelette gratings inherently induced constant differences in the subjective and objective refractions, which arose from the chromatic difference in IOL powers for the visible and NIR lights.
KW - chromatic focal difference
KW - echelette optics
KW - extended-depth-of-focus intraocular lens
KW - near infrared
KW - objective refraction
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U2 - 10.1111/aos.14660
DO - 10.1111/aos.14660
M3 - Article
C2 - 33191658
AN - SCOPUS:85096693716
SN - 1755-375X
VL - 99
SP - e837-e843
JO - Acta ophthalmologica
JF - Acta ophthalmologica
IS - 6
ER -