A person whose retina is damaged is not able to see why?

A person with a damaged retina cannot see because the retina plays a crucial role in converting light into neural signals that the brain interprets as images. Damage to the retinal cells, such as photoreceptors, disrupts this process, leading to vision loss or distortion. Depending on the extent and location of the damage, this can result in issues ranging from blurred vision to complete blindness.