Corneal changes in adult patients with progressive keratoconus after accelerated corneal cross-linking: prospective 6-month interim study results - Mickevicius, Tomas; Rumelaitiene, Ugne; Vaiciuliene, Renata; Kubiliute, Aleksandra; Zaliuniene, Dalia (Klinika Oczna / Acta Ophthalmologica Polonica, 2023)