IMPACT OF ORTHOKERATOLOGY (ORTHO-K) ON CORNEAL TOPOGRAPHY AND OCULAR BIOMETRY

Introduction:Myopia is the most common refractive disorder, significantly characterized by the elongation of the eyeballs axial length. Over the past two decades, significant advancements have been made in lens materials, reverse lens geometry designs, and corneal tomography which contributing in improvements in orthokeratology. However, there is a paucity of data regarding the impact of ortho-K lenses on Indian patients. The goal of this work was to investigate the changes in corneal topography and ocular biometry induced by orthokeratology over time. Materials & Methods: A prospective, longitudinal study was conducted among total 25 Myopic subjects who were interested for vision correction with Ortho-k lenses visited to Chandraprabha Eye Hospital Assam and Eye Forte exclusive (A speciality Eye care clinic). Refractive status and quality of vision were evaluated using the Refractive Status and Vision Profile (RSVP) questionnaire. Results: The mean age of study patients was 8.33 ± 4.16 years (range 5-18 years) and predominantly females (68% females Vs 32% males). The mean spherical equivalent of refractive error was -3.30 ± 2.00 DS with ranges between -7.63DS and -0.75DS. Fundus evaluations performed at each follow-up visit consistently reported results within normal limits, indicating that ortho-K treatment did not induce any significant abnormalities in the retina over the study period. Throughout the study duration, no serious adverse events associated with ortho-K treatment were reported. All patients were satisfied and comfortable and rated 10/10 after use. Conclusion: The study concludes that Ortho-K treatment was safe, non-invasive, and effective in managing refractive errors. This supports its safety and efficacy for long-term use in managing refractive errors, particularly in young patients. The treatment maintained ocular stability without adverse effects, even in subjects with a history of myopia or papillae.