Orenburg branch of The S. Fyodorov Eye Microsurgery Federal State Institution, Orenburg

    Abstract

    Employment of contact methods in patient after radial keratotomy (clinical case)

    N.V. Pasikova, I.V. Kuznetsov

    Orenburg branch of The S. Fyodorov Eye Microsurgery Federal State Institution, Orenburg

    During standard ophthalmological examination of patient B., who had previously received radial keratotomy, attention was drawn to inadequate local above-limit values of keratometric indicators in the central corneal zone up to 55.68 D on the right eye keratotopogram, which caused doubts as per the reliability of measurements and the need to perform recurrent keratotopography after some time. After the period of 24 hours, during which topical medications had not been used, the values of cornea refractive power decreased to 31.40 D, which allowed us to conclude “swelling” of the central parts of epithelium and overestimation of keratometric indicators due to the influence of local anesthetic and sensors of diagnostic devices at presentation. This fact was considered a manifestation of epithelial keratopathy, so underestimation of the state of the corneal epithelium and failure to follow the sequence of diagnostic procedures when planning cataract phacoemulsification in patients after radial keratotomy can cause refractive errors.

    Key words: radial keratotomy, epithelial keratopathy, keratotopography, cornea.