ANALYSIS OF THE RESULTS OF PRESBYOPIA CORRECTION WITH APPLICATION OF A BI-ASPHERIC MULTIFOCAL PROFILE ON THE CORNEA BY THE PRK FOR PATIENTS WITH MYOPIA AND HYPEROPIA

Purpose. To compare the efficacy, safety and predictability of presbyopia correction by the PRK with application of a bi-aspheric multifocal profile on the cornea with PresbyMax software for patients with hyperopia and myopia.

Patients and methods: There were 2 patients group of 25 people each (50 eyes). They were operated with PRK method with application of a multifocal biaspheric profile for simultaneous correction of ametropia and presbyopia. Group I — patients with myopia and presbyopia. Group II — patients with hypermetropia and presbyopia.

Results. In the group 1 year post operation binocular DUCVA was 0,93±0,19, NUCVA — 0,86±0,14, IUCVA — 0,67±0,11. Only two eyes (4 %) lost DBCVA on the 1–2 lines. Target refraction of a dominant eye — emmetropia was 72 % of patients, 28 % observed myopia of –0,75 D. Target refraction of a nondominant eye was –0,75, 68 % had this result, 28 % had deviation –0,50 D of the target refraction, and 4 % — 1,00 D. In group 2 a year post operation binocular DUCVA was 0,96±0,16, NUCVA — 0,77±0,19, IUCVA — 0,64±0,15. Only two eyes (4 %) lost DBCVA on the 1–2 lines. Target refraction of a dominant eye — emmetropia was 72 % of patients, 28 % observed myopia of –0,75 D. Target refraction of a nondominant eye was –0,75, 68 % had this result, 32 % had deviation to –0,75 D of the target refraction.

Conclusions. PRK with application of a bi-aspheric multifocal profile on the cornea using PresbyMAX software and µ-monovision is effective for correction myopia and hypermetropia. Simultaneous correction of ametropia and presbyopia by the PRK method with the application of the multifocal biospheric profile to the cornea with the formation of a slight anisometropia (the concept of µ-monovision) with the PresbyMax software is an effective, safe and predictable method of surgical intervention, both in myopia and hypermetropia.

PRK, PresbyMax, µ-monovision, myopia, hyperopia, presbyopia

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