Posters

Subjective and objective refractions in eyes with extended depth of focus intraocular lenses utilizing echelette diffractive optics.

Poster Details

First Author: K.Minami JAPAN

Co Author(s):    Y. Ota   N. Takizawa   S. Oki   H. Bissen-Miyajima   K. Okamoto        

Abstract Details

Purpose:

In eyes following the implantation of extended depth of focus (EDOF) intraocular lens (IOL) utilizing an echelette optics, the distance focus of the 1st-order diffraction may influence on objective refraction. The study evaluated the subjective and objective refractions clinically, as well as experimentally investigated the influence of the light wavelength on objective refraction by auto-refractometer.

Setting:

Tokyo Dental Collage Suidobashi Hospital, Tokyo, Japan

Methods:

For 63 eyes of 42 patients with EDOF IOLs (ZXR00V, J &J Vision), objective and subjective refractions were examined at 3 months postoperatively. Objective refractions were measured using an auto-refractometer with a near infrared light source, and the differences from the subjective refractions were evaluated in the spherical, cylindrical and spherical equivalent (SE) refractions. Influence of the light wavelength on the lens power was also examined experimentally. Lens powers of monofocal (ZCB00V) and EDOF IOLs of 10.0 and 20.0 D were measured using a lens meter utilizing the Hartmann plate with a light source of 850 nm, and compared.

Results:

Clinically, the objective refractions were significantly more myopic than the subjective refractions (P≤0.001). The differences in the spherical, cylindrical and SE were -0.65 ± 0.24 D, -0.28 ± 0.22 D, and -0.80 ± 0.22 D, respectively. In the experiment, the differences in the lens powers between the monofocal and EDOF IOLs of 10.0 and 20.0 D were 0.80 and 0.85 D.

Conclusions:

The refractive differences observed in eyes with the EDOF IOLs were 0.80 D which was close to the experimental results. The results demonstrated that the autorefraction after implantation of the EDOF IOLs would be influenced by the longitudinal chromatic aberration of the echelette diffractive optics.

Financial Disclosure:

is employed by a for-profit company with an interest in the subject of the presentation, research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented