Corneal topography in patients with cataract after previous anterior radial keratotomy
Year: 2020, volume 16 Issue: №1 Pages: 261-265
Heading: Ophtalmology Article type: Original article
Authors: Rozanova 0.I., Tsyrenzhapova Е.К.
Organization: S. Fyodorov Eye Microsurgery Federal State Institution
Heading: Ophtalmology Article type: Original article
Authors: Rozanova 0.I., Tsyrenzhapova Е.К.
Organization: S. Fyodorov Eye Microsurgery Federal State Institution
Summary:
The purpose of the study was to analyze corneal topography in patients with cataract after previous anterior radial keratotomy Material and Methods. A total of 118 patients (118 right eyes) with a cataract and history of previous anterior radial keratotomy were examined. The average age of patients was 55.8±6.7 years (from 41 to 72). A comprehensive ophthalmological examination was performed, including the topography of the cornea using a Pentacam HR apparatus (Oculus, Germany) with the determination of elevation points of the anterior cornea. Results. The regular post keratotomy profile was revealed in 105 patients (89%), with flattening of the cornea in the central zone by an average of -10.40±3.31 urn (from-48.40 to 12.80 urn). The wrong profile with irregular flattening zones outside the optical center was detected in 13 patients (11 %). In most cases, patients with wrong profile had surgery for retinal detachment and anti-glaucoma surgery in (61%), while in the group with the correct profile it was observed only in 17% of cases. Conclusion. Corneal topography allows to establish the pattern of the post keratotomy corneal deformation, to identify its irregular zones, and to determine features of the central optical zone. Patients within correct cornea profile were older at the time of radial keratotomy. Cornea in patients with a complicated medical history is exposed to additional bio-mechanical loads, which negatively affects keratotopography.
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