Effect of Belin-Ambrosio Deviation Index on 2-Year Refractive Outcomes of Prk Publisher Pubmed



Shams SS¹ ; Hassanzadeh S² ; Zareighanavati M³ ; Ravanshad Y⁴ ; Sadeghi J⁵ ; Ziaei M⁵ ; Zareighanavati S⁶ Show Affiliations
Source: Journal of Cataract and Refractive Surgery Published:2024

Abstract

Purpose:To assess the effect of preoperative Belin-Ambrosio deviation (BAD-D) index on 2-year visual, refractive, and tomographic outcomes, as well as the efficacy and safety of photorefractive keratectomy (PRK) surgery.Setting:Eye clinic, Mashhad, Iran.Design:Prospective cohort study.Methods:This study included 66 patients (66 eyes) who underwent PRK surgery, with a minimum follow-up period of 2 years. Participants were divided into 2 groups: preoperative BAD-D ≥1.60 (high BAD-D) and preoperative BAD-D <1.60 (low BAD-D). Preoperative and postoperative visual, refractive, and tomographic parameters were evaluated, and the efficacy and safety of the procedure were compared between groups.Results:66 patients with a mean age of 35.50 ± 8.21 years (range 22 to 55 years) were included. Postoperatively, the mean spherical equivalent (SE) of refractive error was +0.32 ± 0.65 diopters (D) in the high BAD-D group and +0.18 ± 0.66 D in the low BAD-D group (P =.40). In addition, at 2 years of follow-up, the mean uncorrected distance visual acuity was 0.98 ± 0.07 in the high BAD-D group and 0.97 ± 0.08 in the low BAD-D group (P =.905). Among the postoperative tomographic parameters, front elevation thickness, maximum Ambrosio relational thickness, astigmatism, and central corneal thickness were significantly different between the 2 groups (all, P <.05). At the 2-year follow-up, the mean Safety Index was 1.02 ± 0.04, and 1.01 ± 0.04 in high and low BAD-D groups, respectively (P =.37), and the mean Efficacy Index was 0.99 ± 0.07 and 0.98 ± 0.06 in high and low BAD-D groups, respectively (P =.40).Conclusions:The preoperative BAD-D index does not predict postoperative visual, refractive, and tomographic outcomes in patients with low-to-moderate myopia. However, in patients with normal preoperative BAD-D values, higher agreement was expected between the attempted and achieved SE. © 2024 Published by Wolters Kluwer on behalf of ASCRS and ESCRS. Unauthorized reproduction of this article is prohibited.