Adaptación de lentes de contacto de apoyo escleral en paciente post queratotomía radial e indicación de trasplante, reporte de caso

Abstract

The surgical technique called radial keratotomy (RK) involves making 4 to 8 deep radial incisions (90% of the corneal thickness) in the periphery of the cornea using a mechanical diamond knife that flattened the central cornea to reduce its curvature (1). Objective: To describe the adaptation of scleral contact lenses in a patient after radial keratotomy and with indication for keratoplasty. Methodology: Descriptive, observational, cross-sectional study, with a single male patient, 34 years old, diagnosed with keratoconus in both eyes and indication for corneal transplant for the right eye. Case description: This is a male patient, 34 years old, who 17 years ago underwent the Radial Keratotomy procedure in both eyes. Among the patient's ocular pathological history, it was found that since 2016 he had an indication for a corneal transplant for his right eye, he had a failed adaptation of rigid gas permeable contact lenses for his right eye, of which he reports discomfort and that the lens came out of his eye. Currently the patient does not use optical correction of any kind, therefore, the previous examinations and the subsequent adaptation of specialized lenses will be carried out. Results: The evaluated patient reported total comfort with the lens provided, in addition to excellent visual acuity of 20/25 in distance vision with the Snellen chart and 0.5m in near vision with the Jaegger chart. Conclusion: This study provides more evidence on the effectiveness of scleral support lenses in visual correction and on the comfort that patients experience when using these lenses over other correction options in cases of corneal ectasias after refractive surgery