Risk Factors for Cataract Formation after Implantable Collamer Lens Implantation: Over a Mean 7.5-Year Follow-Up Period.

Lee, Damho; Seok, Ju Yong; Kyung, Hak Su; Kim, Joon Mo

doi:2015.56.6.835

J Korean Ophthalmol Soc > Volume 56(6); 2015 > Article

Original Article

Journal of the Korean Ophthalmological Society 2015;56(6):835-846.
DOI: https://doi.org/10.3341/jkos.2015.56.6.835 Published online June 15, 2015.

Risk Factors for Cataract Formation after Implantable Collamer Lens Implantation: Over a Mean 7.5-Year Follow-Up Period.

Damho Lee, Ju Yong Seok, Hak Su Kyung, Joon Mo Kim

¹Vision Eye Center, Seoul, Korea. damholee@naver.com
²Department of Ophthalmology, Korea Army Training Center District Hospital, Nonsan, Korea.
³Department of Ophthalmology, National Medical Center, Seoul, Korea.
⁴Department of Ophthalmology, Kangbuk Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.

ICL 삽입술 후 백내장 발생의 위험인자: 평균 7.5년 추적관찰 연구

이담호¹⋅석주용²⋅경학수³⋅김준모⁴

비전안과의원¹, 육군훈련소 지구병원 안과², 국립중앙의료원 안과³, 성균관대학교 의과대학 강북삼성병원 안과학교실⁴

Received: 27 June 2014 • Revised: 17 October 2014 • Accepted: 15 January 2015

Abstract

PURPOSE
To determine the risk factors and incidence of cataract formation over a long-term mean follow-up of 7.5 years after type V4 implantable collamer lens (ICL) implantation. METHODS: We analyzed the preoperative, 3-month postoperative, 3-year postoperative, and last follow-up data of 228 eyes (118 patients) with mean preoperative spherical equivalent of -12.7 D and minimum postoperative follow-up of 3 years. Additionally, we determined the risk factors for cataract formation and calculated the 10.3 year cumulative cataract formation rate and 10.3 year cumulative cataract surgery rate using a survival curve. RESULTS: After type V4 ICL implantation with minimum follow-up of 3 years, the calculated 10.3 year cumulative cataract formation rate was 20% and actual cataracts developed in 34 eyes (14.9%). The 10.3 year cumulative cataract surgery rate was 12% based on a survival curve and actual cataract surgery was performed in 12 eyes (5.3%). The risk factors for cataract formation were age (odds ratio [OR] = 1.10, p = 0.00), preoperative spherical equivalent (OR = 0.90, p = 0.00), crystalline lens thickness (OR = 9.54, p = 0.00), axial length (OR = 1.33, p = 0.00), 3 months postoperative vault (OR = 0.50, p = 0.03), and existence of peripheral touch between ICL optic margin and crystalline lens at last follow-up (OR = 7.84, p = 0.00). CONCLUSIONS: We suggest one of the main risk factors for cataract formation after ICL implantation is decreased central vault and peripheral touch between ICL optic margin and crystalline lens.

Key Words: Cataract formation;ICL implantation;Peripheral touch;Risk factors