The annually growing number of children and adults suffering from visual impairments necessitates new approaches to the diagnosis and treatment of eye pathologies. The most common pathologies leading to vision loss are cataract, age-related macular degeneration, glaucoma, diabetic retinopathy and high myopia. They result in pathological processes that lead to patient disability (temporary or permanent) and a decrease in the quality of live.This fact emphasizes the need to implement and introduce into the ophthalmological practice new approaches to the treatment of diseases using modern medications, new technical means and equipment. However, when conducting a practical study, a number of problems arise: the organizational problem (including the problem of finding and implementing new treatment methods), ethical and financial problems that impede the proper use of the obtained results despite their promise, and specifically the difficulties arising in the organization of studies (development of study design, including the choice of medical institution, selection of an appropriate group of patients, their preparation in order to implement the necessary continuity in therapy and staged observation at certain time intervals).