Keratoconus detected by corneal topography in patients seeking refractive surgery in Jazan region, Saudi Arabia: A retrospective cross-sectional study

Ann Med Surg (Lond). 2022 May 24:79:103790. doi: 10.1016/j.amsu.2022.103790. eCollection 2022 Jul.

Abstract

Background: Keratoconus is a non-inflammatory, chronic, idiopathic, corneal disease characterized by thinning of the core or paracentral part of the cornea. In this study, we demonstrate the prevalence of keratoconus among patients seeking refractive surgery using laser vision correction (LVC) at the Department of Ophthalmology, Private Eye Center, Jazan, Saudi Arabia.

Materials and methods: A retrospective cross-sectional study was undertaken with the data from January 1, 2019 to December 31, 2019 in the ophthalmology department of Jazan city. This study included 1068 eyes of 534 patients of which 56.8% were men. The mean patient age was 28.5 (SD = 8.3) years. The analyst performed chi-square tests for the report. Prevalence was calculated at a 95% confidence interval at specified times in the year (CI).

Results: The prevalence of manifest unilateral keratoconus was 3% and that of bilateral keratoconus was 18.72%; on the other hand prevalence rates of suspected unilateral KC was 16.48% and of bilateral KC 9.36%. Significant differences between eyes were noted and recorded.

Conclusion: The occurrence and spread of this condition are on the rise in the city of Jazan and on the outskirts.

Terminology: eyeball disorder (keratoconus), prevalence, risk factors, treatment of the disorder (vision).

Keywords: Ante, anterior elevation map; BAD, Belin-Ambrosio Enhanced ectasia Display; Is A, asymmetry; K d, Kc diagram; K ma, kc max (the maximum keratometric power); KC, keratoconus; Keratoconus; Laser vision correction; N, number; OD, oculus dexter (right eye); OS, oculus sinister (left eye); Post, posterior elevation map; Prevalence; Risk factors; Sd, standard deviation; Thick, the thickness location; Thin, thinnest location.