Улучшение зрения при использовании склеральных линз с волновым фронтом для коррекции неправильного роговичного астигматизма

Visual Improvement With Wavefront-Guided Scleral Lenses for Irregular Corneal Astigmatism.

Irregular corneal astigmatism (ICA) may be induced by corneal disease, dystrophy, scarring, trauma, surgery, or other disorders affecting the cornea. Irregular corneal astigmatism creates higher order aberrations (HOA), significantly degrading image quality, even with optimal spherocylinder correction. Previous studies have reported that patients with ICA may have difficulty achieving satisfactory vision using spectacle or traditional soft contact lens correction.¹ This is primarily due to an increase in HOAs such as coma, trefoil, and spherical aberration, which are uncorrectable by spectacles or traditional soft disposable contact lenses because these optical aids are only designed to address lower order aberrations (defocus and astigmatism), that is, conventional refractive error.