Клинические результаты после имплантации комбинации интрастромальных роговичных сегментов в различных оптических зонах при запущенном кератоконусе

Clinical outcomes after implantation of a combination of intrastromal corneal ring segments in different optical zones in advanced keratoconus.

Keratoconus is a chronic corneal ectasia marked by progressive stromal thinning and steepening of the corneal surface, which results in irregular astigmatism and impaired vision.[¹,²,³,⁴,⁵,⁶,⁷,⁸,⁹,¹⁰] The therapeutic strategy depends on the stage of the disease. In the initial phases, spectacles or contact lenses may provide acceptable visual correction.[¹¹,¹²,¹³,¹⁴,¹⁵,¹⁶] To delay progression, corneal collagen cross-linking with riboflavin and ultraviolet light has become the standard option.[¹⁷] In more advanced stages, implantation of intrastromal corneal ring segments (ICRSs) offers a minimally invasive means to reshape the cornea and decrease curvature.[¹⁸] When structural compromise is severe and visual function cannot be restored by these approaches, corneal transplantation—either lamellar or penetrating—remains necessary.[¹⁹,²⁰]