FIELD: medicine.
SUBSTANCE: invention refers to medicine, namely to ophthalmology. Epithelium is ablated in phototherapeutic keratectomy at a depth of not less than 80 % of its initial thickness. After that, energy density is lower than ablation threshold of Bowman shell, and in case of absence of this shell energy density is lower than threshold of ablation of corneal stroma at depth exceeding design residual thickness of epithelium by at least 2 times. Threshold values of energy densities for ablation of Bowman shell and stroma are pre-determined based on specific wavelength of laser radiation and repetition rate of pulses.
EFFECT: method enables removing epithelium when performing therapeutic and/or optic-reconstructive excimer laser operations, as well as in various corneal pathologies.
1 cl, 2 ex
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