Keratoconus Group - Intrastromal corneal ring segment (like Intacs and Ferrara Ring) is a minimally invasive surgical option used primarily for the treatment of keratoconus. the implants flatten shape of the cornea
Intrastromal corneal rings - kerarings
Morphological characterization and clinical effects of stromal alterations after intracorneal ring segment implantation in keratoconus | SpringerLink