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Aberrometry changes following implantable collamer lens implantation and laser in situ keratomileusis for low-grade myopia

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Session Details

Session Title: Phakic IOLs

Session Date/Time: Sunday 23/09/2018 | 08:00-10:00

Paper Time: 09:08

Venue: Room A3, Podium 1

First Author: : P.Campos PORTUGAL

Co Author(s): :    B. Feijoo   F. Ribeiro                 

Abstract Details


To compare postoperative aberrometry after implantable collamer lens (ICL; STAAR Surgical) implantation and laser in situ keratomileusis (LASIK) in eyes with low-grade myopia.


Single center (Hospital da Luz, Lisbon, Portugal) retrospective, nonrandomized, consecutive case series.


We studied 53 eyes of patients undergoing ICL implantation and 53 eyes of patients undergoing LASIK (Technolas217z; Bausch & Lomb) for the correction of low-grade myopia (manifest spherical equivalent < 7 diopters). Ocular higher-order aberrations (HOA), spherical-like aberrations and coma-like aberrations (horizontal and vertical) were measured by Zywave aberrometer (Bausch & Lomb) before and after surgery, respectively.


There were no differences in the statistical analyses between the two groups, except in pachymetry. There were also no differences between the spherical equivalent after surgery (ICL-0,23 ± 0,37 LASIK -0,04 ± 0,54). For a 6-mm pupil, the changes in aberrometry after LASIK were statistically different. After ICL implantation there were only significantly differences in spherical-like aberration. The changes in aberrometry after ICL implantation were significantly less than those after LASIK except for horizontal coma. We also studied eyes implanted with ICL V4c but there was no statistical difference in this subgroup.


ICL implantation induces significantly fewer ocular HOA than LASIK even in a low-grade myopic population, suggesting that despite being an intra-ocular surgery and the differences between cost-benefit, it offers best visual performance than LASIK.

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