Abstract

Volume.124 Number.11

Original article : Clinical science

Preoperative Factors Involved in Waxy Vision of Eyes with Diffractive Bifocal Intraocular Lens
Ryu Takabatake, Makiko Takahashi
Takabatake West Eye Clinic

Purpose: To investigate the preoperative factors involved in the waxy vision of eyes with diffractive bifocal intraocular lens (IOL).
Subjects and methods: The present study involved 1,568 eyes (the preceding eye of bilateral cataracts) of 1,568 patients aged ≥ 60 years. The patients had no eye diseases that affect visual acuity and underwent an implantation of TECNIS Multifocal ZLB00 (Johnson & Johnson Vision) at Takabatake "West" Eye Clinic between January 2016 and October 2019. We compared the preoperative factors between cases that underwent extraction of IOL because of waxy vision after the operation (extraction group) and cases that did not undergo extraction (control group).
Results: The extraction group included 42 eyes of 42 patients (2.7%), and the axial length in the extraction group was significantly shorter than that in the control group (p<0.001). There were no significant differences in sex, age, manifest refraction, or corneal astigmatism. The extraction rate by axial length was 13.5% for the short axial axis (<22 mm), which was significantly higher than 2.7% for the standard axial axis (≥ 22 mm to <26 mm) and 0.4% for the long axial axis (≥ 26 mm) (p<0.001).
Conclusions: The results of this study suggest that the waxy vision of eyes with diffractive bifocal IOL may occur when the axial length is shorter. In particular, the decision to implant a diffractive bifocal IOL should be carefully considered for short eye with axial length<22 mm.
Nippon Ganka Gakkai Zasshi (J Jpn Ophthalmol Soc) 124: 925-930, 2020.

Key words
Multifocal intraocular lens, Waxy vision, Contrast sensitivity, Axial length
Reprint requests to
Ryu Takabatake, M. D. Takabatake West Eye Clinic. 138-101 Tanaka, Kita-ku, Okayama 700-0951, Japan