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Corresponding Author

Mahmoud, Amr

Document Type

Original Article

Abstract

Background: Implantable Phakic Contact Lenses have been developed as a cost-effective alternative to Visian Implantable Collamer lenses for refractive correction. Aim of the work: to evaluate the central vault of implantable phakic contact lens (IPCL) and its correlation to horizontal white to white (WTW) corneal diameter using anterior segment optical coherence tomography. Patients and Methods: 30 eyes that match the inclusion criteria for IPCL V2.0 implantation were studied. Two groups were divided to study the correlation between pre-operative horizontal (WTW) corneal diameter and post-operative central vault: group 1 with WTW diameter < 12 mm and group 2 with WTW diameter ≥ 12 mm. Results: Visual acuity and spherical equivalent improved post-operatively with P value < 0.01, IOP increased maximally at 1 week and 1 month post operatively but declined at 6 and 12 months with P value < 0.01. Central vault in group 1 decreased from the 1st week post-operatively till the end of 12 months with P value < 0.05. While in group 2, it decreased till the end of 12 months with P value > 0.05. Comparison between the 2 groups showed mild difference in all visits with P value > 0.05. Also correlation between pre-operative WTW diameter and central vault was negative with P value > 0.05. Conclusion: IPCL is a safe and effective approach for correction of high degrees of refractive errors or when corneal refractive surgery is contraindicated. Also, no correlation was found between pre-operative horizontal WTW corneal diameter and post-operative central vault.

Keywords

IPCL; Vault; WTW

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