- Journal of Refractive Surgery
- February 2012 - Volume 28 · Issue 2: 106-111
To compare changes in ocular higher order aberrations (HOAs) after Visian Implantable Collamer Lens (ICL, STAAR Surgical Co) implantation and wavefront-guided laser epithelial keratomileusis (WFG-LASEK) to correct high myopia.
This prospective case series comprised 30 eyes (18 patients) that underwent ICL implantation (ICL group) and 33 eyes (18 patients) that underwent WFG-LASEK (WFG-LASEK group). All eyes had spherical equivalent of −6.00 to −9.00 diopters. Entire ocular, internal optic, and corneal HOAs were measured before surgery and 3 months after surgery using a laser ray tracing aberrometer. Contrast sensitivity testing was performed in 10 eyes from each group at a photopic light level of 85 cd/m2 and a mesopic level of 3 cd/m2 3 months after surgery.
In the ICL group, HOAs changed for the entire ocular trefoil-y, spherical aberration, internal optic spherical aberration, and corneal trefoil-y. In the WFG-LASEK group, increased HOAs were observed for total HOAs, entire ocular and corneal spherical aberration, secondary astigmatism, and tetrafoil. The ICL group had lower induced aberration values of entire ocular and corneal HOAs compared with the WFG-LASEK group. No significant differences in contrast sensitivity values between groups at the photopic level were noted; however, contrast sensitivity values were significantly lower for 3 (P=.01) and 6 cycles per degree (P<.001) in the WFG-LASEK group at the mesopic level. At the mesopic level, total HOAs, trefoil-y, spherical aberration, and secondary astigmatism were higher in the WFG-LASEK group.
Implantable Collamer Lens implantation induced fewer ocular and corneal HOAs and resulted in better contrast sensitivity at mesopic levels than WFG-LASEK in eyes with high myopia.
From Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea.
This work was partially supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MEST No. 2009-0066392) and the Converging Research Center Program funded by the Ministry of Education, Science and Technology (2011K000680).
The authors have no financial or proprietary interests in the materials presented herein.
Correspondence: Tae-im Kim, MD, PhD, Dept of Ophthalmology, Yonsei University College of Medicine, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-752, Korea. Tel: 82 2 2228 3438; Fax: 82 2 312 0541; E-mail: firstname.lastname@example.org
Received: May 26, 2011
Accepted: August 17, 2011
Posted Online: November 10, 2011