FEATURES OF CLINICAL AND STRUCTURAL CHANGES IN EYES WITH MYOPIA USING ORTHOKERATOLOGICAL LENSES
Abstract
Introduction. Progressive myopia in childhood is a pressing medical and social problem; it ranks third as a cause of visual disability. Purpose — to study the features of the anatomical and structural parameters of the eyes with myopia using orthokeratological lenses. Materials and methods. 160 eyes (80 patients) were examined — 60 eyes (30 patients) with mild myopia and 100 eyes (50 patients) with moderate myopia before and after treatment with orthokeratological lenses. Research methods: visometry, autorefractometry, ophthalmometry, ophthalmoscopy, biometry, ultrasound diagnostics of the central retinal artery and central retinal vein, determination of choroidal thickness, ultrasound of the eye. Results of the study. After treatment with orthokeratological lenses in the night mode, an increase in increase in linear velocity of blood flow in the central retinal artery was detected to 14.2±0.6 cm/s with a low degree of myopia and 15.8±0.64 cm/s with a moderate degree of myopic defocus (p <0.05); normalization of venous blood flow in the central vein to 5.8±0.59 cm/s and 5.3±0.6 cm/s (p <0.05); increase in choroidal thickness to 339±1.9 μm and 273±1.67 μm (p < 0.05); increase in the average thickness of the central fovea of the macula to 249.8±0.65 mm, and 256±0.63 mm (p < 0.01) respectively, for mild and moderate myopia. Conclusion. Improving the anatomical and structural parameters of the eye contributes to increasing the effectiveness of treatment with orthokeratological lenses for mild and moderate myopia and stabilizing the progression of myopia while maintaining the axial component — AXL of the eye.
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