To Evaluate The Icl Vault Difference Following Horizontal And Vertical Icl Alignment In Either Eye Of The Same Patient At A Refractive Surgery Centre India

The aim of this study is to compare the vault differences of the same size Implantable Collamer Lens (ICL) in both eyes of the same patient, where one ICL is aligned horizontally and the other vertically.

Eye7 Hospitals Pvt Ltd

New Delhi

India - 110002

This prospective, non-randomized study included 96 patients who underwent bilateral myopic ICL implantation. In one eye the ICL was aligned horizontally and vertically in the other eye. ICL sizing parameters were assessed using the Pentacam (OCULUS), and postoperative vaults were measured on day 1, day 15 and at 3 months using Anterion SS-OCT (Heidelberg). Only cases with identical ICL sizes in both eyes were evaluated. The study represents the first planned prospective comparison of vaults in both eyes of the same patient with similar White-to-White (WTW) measurements and ICL sizes

ICL sizing in the study population was distributed as follows: 8 patients with 12.1 mm, 46 patients with 12.6 mm, 38 patients with 13.2 mm, and 4 patients with 13.7 mm ICLs. Of the 96 patients, 94 (97.9%) had lower vaults in vertically aligned ICLs, while 1 patient (1.04%) had a higher vertical vault, and 1 patient (1.04%) had equal vaults in both alignments. The mean vault difference in patients with lower vertical vaults was 232.14 microns. The mean vault differences were 105.62 microns for 12.1 mm ICLs, 211.89 microns for 12.6 mm ICLs, 301.2 microns for 13.2 mm ICLs, and 149 microns for 13.7 mm ICLs.

A horizontally implanted ICL typically results in a higher vault, which can be reduced by rotating the ICL vertically, with an average reduction of 232.14 microns. Vault differences also vary according to ICL size, with the smallest vault differences observed in 12.1 mm ICLs and the largest in 13.2 mm ICLs