Comparison of Anterior Chamber Parameter and Refractive Change between Three-Piece and Single-Piece Aspheric Intraocular Lenses

Hye Sun Kim; Dong Min Lee; Ji Min Ahn; Eung Kweon Kim; Tae Im Kim

doi:10.3341/jkos.2012.53.12.1789

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Kim, Lee, Ahn, Kim, and Kim: Comparison of Anterior Chamber Parameter and Refractive Change between Three-Piece and Single-Piece Aspheric Intraocular Lenses

Original Article

Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(12): 1789-1793.

Published online: 17 December 2012

DOI: https://doi.org/10.3341/jkos.2012.53.12.1789

Comparison of Anterior Chamber Parameter and Refractive Change between Three-Piece and Single-Piece Aspheric Intraocular Lenses

Hye Sun Kim, MD¹, Dong Min Lee, MD¹, Ji Min Ahn, MD², Eung Kweon Kim, MD, PhD¹, Tae Im Kim, MD, PhD¹

¹Department of Ophthalmology, Yonsei University College of Medicine, The Institute of Vision Research, Seoul, Korea.

²Siloam Eye Hospital, Seoul, Korea.

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

Received 26 March 2012 Accepted 19 October 2012

Abstract

Purpose

To compare the anterior chamber depth (ACD), anterior chamber volume (ACV), anterior chamber angle (ACA) and refractive change after cataract surgery between 3-piece and 1-piece aspheric intraocular lens (IOL) implantation.

Methods

The present study consisted of 16 patients (25 eyes) having 3-piece aspheric Tecnis® ZA9003 IOL and 21 patients (30 eyes) having 1-piece aspheric Tecnis® ZCB00 IOL. The ACD, ACV, and ACA were measured using an anterior eye segment analysis system (Pentacam, Oculus, Wetzlar, Germany) preoperatively and postoperatively 1 week and 1 month. Refractive outcomes were evaluated using an autokeratometer.

Results

When comparing the 3-piece (Tecnis® ZA9003) and 1-piece (Tecnis® ZCB00) IOL with the same optic, ACD, ACV, and AVA increased significantly after cataract surgery. The 1-piece IOL showed deeper ACD than the 3-piece IOL at postoperative 1 week and 1 month. Postoperative refraction showed slight myopic shift compared with target diopter, but was stable in both groups.

Conclusions

There was significant increase in ACD, ACV, and ACA after cataract surgery in both IOL-inserted groups. Results showed stable refraction after cataract surgery in both groups. Consideration of the A-constant will be needed because of myopic change with the 1-piece IOL.

Keywords: Anterior chamber depth, Aspheric IOL, Refraction, Tecnis® ZA9003, Tecnis® ZCB00

Figures and Tables

Figure 1

Mean anterior chamber depth in the three-piece and the single-piece IOL groups after cataract surgery.

Figure 2

Mean spherical equivalent in the single piece and the three piece IOL groups after cataract surgery.

Table 1

Characteristics of the three-piece and single-piece aspheric intraocular lenses

Table 2

Demographics of study groups

Values are presented as mean ± SD or n.

Table 3

Preoperative and postoperative anterior segment parameters

^*Values are presented as mean ± SD.

ACD = anterior chamber depth; ACV = anterior chamber volume; ACA = anterior chamber angle.

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