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Han, Han, Ahn, Jeong, Lee, Seo, Kim, and Kim: Influence of Pupil Size on Visual Acuity after Implantation of the TECNIS 1-Piece Intraocular Lens
Original Article
Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(11): 1615-1620.

Published online: 19 November 2012

DOI: https://doi.org/10.3341/jkos.2012.53.11.1615

Influence of Pupil Size on Visual Acuity after Implantation of the TECNIS 1-Piece Intraocular Lens

Jinu Han, MD, Kyung Eun Han, MD, Ji Min Ahn, MD, Se Hwan Jeong, MD, Hyung Keun Lee, MD, Kyoung Yul Seo, MD, PhD, Eung Kweon Kim, MD, PhD, Tae Im Kim, MD, PhD

The Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.

Address reprint requests to Tae Im Kim, MD, PhD. Department of Ophthalmology, Severance Hospital, #50 Yeonsei-ro, Seodaemun-gu, Seoul 120-752, Korea. Tel: 82-2-2228-3570, Fax: 82-2-312-0541, taeimkim@gmail.com

Received 28 November 2011       Accepted 24 September 2012

Copyright © 2012 The Korean Ophthalmological Society

Abstract

Purpose

To evaluate the influence of pupil size on uncorrected visual acuity and spherical aberration of the TECNIS 1-piece intraocular lens (IOL).

Methods

In this study 61 eyes were implanted with a TECNIS 1-piece IOL. Pupil size was checked by standard pupil card with cobalt blue light postoperatively. Best corrected visual acuity (BCVA) and uncorrected visual acuity (UCVA) were assessed postoperatively. Total spherical aberration and high-order aberration for mesopic pupil size zone were measured.

Results

There were no significant differences of spherical equivalent, age, preoperative astigmatism, BCVA between two groups, but small pupil group revealed better UCVA (p = 0.02) and lower ocular aberration than large pupil group.

Conclusions

After cataract surgery, pupil size greater than 5.0 mm increases total aberration. Thus, visual acuity with small pupil after aspheric TECNIS 1-piece IOL implantation show better clinical result on uncorrected visual acuity.

Keywords: Aspheric intraocular lens, Pupil size, Spherical aberration

Figures and Tables

Table 1
Preoperative demographics of study groups
jkos-53-1615-i001

All values are displayed as log MAR visual acuity.

No. = number; SD = standard deviation; BCVA = best corrected visual acuity; SE = spherical equivalent.

Table 2
Postoperative visual acuity and spherical equivalent
jkos-53-1615-i002

All values are displayed as log MAR visual acuity.

UCVA = uncorrected visual acuity; BCVA = best corrected visual acuity; SE = spherical equivalent.

*Analyzed by Mann-Whitney U test.

Table 3
Comparison of total ocular aberrations (µm) between two groups
jkos-53-1615-i003

Values are presented as mean ± SD.

RMS = root mean square; LO A = low-order aberration; HO A = higher-order aberration; Sph A = spherical aberration.

Table 4
Comparison of internal optics aberrations (µm) between two groups
jkos-53-1615-i004

Values are presented as mean ± SD.

RMS = root mean square; LO A = low-order aberration; HO A = higher-order aberration; Sph A = spherical aberration.

Table 5
Comparison of corneal aberrations (µm) between two groups
jkos-53-1615-i005

Values are presented as mean ± SD.

RMS = root mean square; LO A = low-order aberration; HO A = higher-order aberration; Sph A = spherical aberration.

Table 6
Comparison of total ocular aberrations (µm) between two groups at 3.0 mm pupil zone
jkos-53-1615-i006

Values are presented as mean ± SD.

RMS = root mean square; LO A = low-order aberration; HO A = higher-order aberration; Sph A = spherical aberration.

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