Gene therapy is now able to restore sight to completely blind people
In some forms of blindness, much of the eye works fine, but the vision is perceived by damage to the photoreceptors in the retina, which is the first step in the visual chain. Because when they are activated by light, they transmit the stimulus to further areas of the nervous system, where it is analyzed. In higher organisms, there is talk of the visual path transmitting information to the visual cortex. Unfortunately, photoreceptors are damaged in many eye diseases, such as retinitis pigmentosa and age-related macular degeneration, and while the other vision mechanisms are working, the patient loses his sight.