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Subject Area

Ophthalmology

Article Type

Original Study

Abstract

Objective To evaluate the use of manual keratoscope intraoperative to improve the outcome of intracorneal ring segment (ICRS) implantation in patients with keratoconus. Background Keratoconus is a bilateral, progressive, noninflammatory disease of the cornea that often leads to high myopia and astigmatism. It seems to be a multifactorial disease with an unknown exact etiology that impairs the quantity and quality of vision secondary to thinning in and protrusion of the cornea. This results in irregular astigmatism with or without myopia. Methods This was a randomized prospective cohort, interventional case series study conducted at Tiba Ophthalmic Center, Menoufia during the period from September 2018 to September 2020 on patients with keratoconus. The study included a sample of keratoconus patients planned for femto-laser-assisted ICRS implantation. The participants were randomly divided into two subgroups according to the use of manual keratoscope intraoperatively: Group A: blind implantation of ICRS without keratoscope. Group B: keratoscope-assisted ICRS implantation. Results According to K and Max elevation, there was a statistically significant difference between groups. Regarding Max elevation, Group B showed a higher Max elevation (front) than Group A. Within each group, there was a statistically significant difference postoperative. Conclusion The use of manual keratoscope improved best spectacle-corrected visual acuity with better maximum front elevation and anterior chamber depth of cornea in keratoconus patients' postoperative when compared with the blind implantation of ICRS.

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