Postoperative visual acuity estimation of extended-depth-of-focus intraocular lens by novel fellow eye self-tuning (FEST) method

Session Details

Session Title: Presented Poster Session: EDOF IOLs

Venue: Poster Village: Pod 1

First Author: : H.Sasaki JAPAN

Co Author(s): :    M. Kita   N. Shibata   S. Shibata   H. Ishida   Kubo           

Abstract Details

Purpose:

For bilateral cataract surgery implanting extended-depth-of-focus intraocular lens (EDOF IOL) (Symfony, Abbot Medical Optics Inc.), we developed what we call the fellow eye self-tuning (FEST) method wherein the refractive value of the fellow eye is determined from the visual acuity (VA) of the postoperative first-treated eye, and investigated the accuracy of the method.

Setting:

Twenty-six eyes of 13 patients implanted with Symfony EDOF-IOL in Kanazawa Medical University Hospital, Japan, which were available for examination one month after cataract surgery, were enrolled in this study.

Methods:

One-week post-surgery in the first eye, we measured distant-corrected VA (DCVA; 30, 40, 50, 70, 100, and 500 cm), and DCVA under additional powers of +0.5 D and +0.75 D, and determined the refractive value of the second eye according to patients' needs. One-month post-surgery of the second eye, we assessed FEST accuracy by comparing DCVA results. The estimated DCVA by FEST and postoperative actual distant-uncorrected VA (DUCVA; 30, 40, 50, 70, 100, and 500 cm) were compared in 3 groups; 0 D (6 eyes), -0.5 D (5 eyes), and -0.75 D (2 eyes) of subjective spherical equivalence (SE).

Results:

Under the condition of 0 D subjective SE by FEST, postoperative DCVA (30, 40, 50, 70, 100, and 500 cm) in the first eyes were 0.45±0.19, 0.23±0.16, 0.07±0.16, -0.04±0.12, -0.08±0.12, -0.1±0.07 logMAR, and under the additional powers of +0.5 D and +0.75 D, were 0.35±0.14, 0.15±0.16, 0.01±0.09, -0.04±0.12, -0.07±0.13, 0.04±0.1 logMAR, and 0.30±0.16, 0.09±0.1, 0.00±0.09, -0.07±0.12, 0.10±0.06, 0.12±0.1 logMAR, respectively. Differences between expected DCVA by FEST compared with actual DUCVA were not significant among each paired distance.

Conclusions:

It was revealed that FEST had high accuracy, showing a difference of less than 0.1 logMAR in comparison to actual DUCVA at all distances. FEST method is effective to estimate the postoperative DUCVA of the second eye to be implanted with EDOF IOL.

Financial Disclosure:

None