Journal List > J Korean Ophthalmol Soc > v.53(12) > 1009248

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Kwak, Ryu, Kim, Kim, and Ha: Effect of Preoperative Crystalline Lens Rise on Vaulting after Implantable Collamer Lens Implantation
Original Article
Journal of the Korean Ophthalmological Society

Journal of the Korean Ophthalmological Society 2012; 53(12): 1749-1755.

Published online: 17 December 2012

DOI: https://doi.org/10.3341/jkos.2012.53.12.1749

Effect of Preoperative Crystalline Lens Rise on Vaulting after Implantable Collamer Lens Implantation

Ae Young Kwak, MD1, 2, Ik Hee Ryu, MD3, Jin Kook Kim, MD4, Tae Im Kim, MD, PhD1, Byoung Jin Ha, MD5

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

2Siloam Eye Hospital, Seoul, Korea.

3Eyenu Eye Clinic, Seoul, Korea.

4BS Eye Center, Seoul, Korea.

5BGN Eye Clinic, Seoul, Korea.

Address reprint requests to Byoung Jin Ha, MD. BGN Eye Clinic, #465 Gangnam-daero, Seocho-gu, Seoul 137-920, Korea. Tel: 82-2-2086-0088, Fax: 82-2-2086-0099, nairwiny@naver.com

Received 25 February 2012       Accepted 6 November 2012

Copyright © 2012 The Korean Ophthalmological Society

Abstract

Purpose

To evaluate the parameters affecting vaulting and correlation between preoperative crystalline lens rise and vaulting after implantable collamer lense (ICL) implantation.

Methods

A total of 53 eyes of 34 patients who underwent ICL implantation were examined retrospectively. White-to-white (WTW) and anterior chamber depth (ACD) were obtained from scanning topography (ORB scan) before surgery. Preoperative crystalline lens rise (CLR) and vaulting at 6 months after ICL implantation were measured using anterior segment optic coherence tomography (AS-OCT). Multiple regression analysis was performed to evaluate the factors affecting central vaulting.

Results

The mean preoperative crystalline lens rise was -120 ± 219 µm, and mean central vaulting 6 months after surgery was 544 ± 175 µm. Preoperative SE, WTW, ACD, and CLR were significantly correlated with vaulting at 6 months after surgery. With the use of meaningful variables, multiple regression analysis showed that CLR, WTW, ACD and SE, in that order of influence, had significant effects on vaulting and the multiple regression equation was obtained as follows: Vaulting (µm) = (160.913 × ACD (mm)) + (170.134 × WTW (mm)) + (-0.338 × CLR (µm)) + (-23.783 × SE (D)) - 2250.184.

Conclusions

CLR had a stronger influence on vaulting after ICL implantation than the previously proven parameters: WTW, ACD, and SE. In addition to WTW, ACD and SE, CLR should also be considered a new criterion for estimating vaulting after ICL implantation.

Keywords: Anterior chamber depth, Crystalline lens rise, Implantable contact lens, Vaulting, White-to-white

Figures and Tables

Figure 1
Crystalline lens rise which is the distance between the anterior pole of the crystalline lens and the line connecting the 3 o'clock to 9 o'clock angle recess is measured on the horizontal diameter median image of anterior segment OCT. In this patient, crystalline lens rise is 320 µm.
jkos-53-1749-g001
Figure 2
Anterior segment OCT image of the left eye of a 25-year-old man at 6 months after ICL implantation. Vaulting is 410 µm.
jkos-53-1749-g002
Figure 3
Correlation between spherical equivalent and the central vaulting of the ICL.
jkos-53-1749-g003
Figure 4
Correlation between horizontal white-to-white distance and the central vaulting of the ICL.
jkos-53-1749-g004
Figure 5
Correlation between anterior chamber depth and the central vaulting of the ICL.
jkos-53-1749-g005
Figure 6
Correlation between crystalline lens rise and the central vaulting of the ICL.
jkos-53-1749-g006
Table 1
Preoperative data of 53 eyes that underwent ICL implantation
jkos-53-1749-i001
Table 2
Correlation analysis between vaulting and preoperative data
jkos-53-1749-i002

SE = spherical equivalent; WTW = white-to-white distance; ACD = anterior chamber depth; CLR = crystalline lens rise.

*p < 0.05; †p < 0.001.

Table 3
Results of stepwise multiple regression analysis to select variables relevant to the central vaulting after ICL implantation
jkos-53-1749-i003

SE = spherical equivalent; D = diopter; WTW = white-to-white distance; ACD = anterior chamber depth; CLR = crystalline lens rise.

Table 4
Correlation analysis between anterior chamber depth and preoperative data
jkos-53-1749-i004

SE = spherical equivalent; WTW = white-to-white distance; CLR = crystalline lens rise; ACD = anterior chamber depth.

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