Full ocular clinical examination including fundus photography, dark adaptation (but not ERG) was performed on six patients with retinitis pigmentosa and on two patients with Usher syndrome before and six months after being treated for three weeks in Cuba. Four men and four women (20 to 44 years) had surgery on both eyes, in addition to ozonotherapy, electric stimulation and oral/parenteral medication. The patients did not know what surgical procedures had been used. The medication continued several months after returning home. No gain in visual function was recorded. One patient had diplopia after treatment and needed surgery. Three patients experienced annoying side effects in visual function after treatment, especially photophobia. One of these had an increase of fundus pigmentation in a localized area.