Topography-guided treatment in regular and irregular corneas

• Published in: Indian journal of ophthalmology Vol. 68; no. 12; pp. 2699 - 2704
• Main Authors: Ramamurthy, Shreyas, Soundarya, B, Sachdev, Gitansha
• Format: Journal Article
• Language: English
• Published: India Wolters Kluwer India Pvt. Ltd 01.12.2020; Medknow Publications and Media Pvt. Ltd; Medknow Publications & Media Pvt. Ltd; Wolters Kluwer - Medknow
• Subjects: Care and treatment; Collagen; Cornea; Cornea - surgery; Corneal diseases; Corneal Topography; Cross-linking; Degeneration; Diagnosis; Evaluation; Humans; Keratoconus; Keratoconus - diagnosis; Keratoconus - surgery; Keratomileusis, Laser In Situ; Lasers, Excimer; Practice guidelines (Medicine); Review; Surgery; Topography; India; corneal topography; keratoconus; cornea; ectasia; Ablation; excimer
• ISSN: 0301-4738; 1998-3689
• DOI: 10.4103/ijo.IJO_2119_20

Over the last decade, refractive surgery has been revolutionized by advancements in ablation profiles, available for the treatment of both regular and irregular corneas. Advances in corneal imaging have helped highlight the presence of higher-order aberrations, the correction of which could result in a better quality of vision. Topographic measurements being static are more repeatable and pupil independent and therefore provide the ideal platform for correction of both lower and higher-order aberrations and could result in improved visual quality even in patients with seemingly regular corneas. The combination of topography-guided treatment with collagen cross-linking has further increased the scope of treating irregular corneas like keratoconus, post-laser in-situ keratomileusis ectasia, and pellucid marginal degeneration. This review delves into the current literature and guidelines available for the topographic treatment of regular and irregular corneas.