Which of the following visual impairments is characterized by a progressive death of retinal cells?

Retinitis Pigmentosa is a hereditary condition that leads to a progressive degeneration of photoreceptor cells in the retina, particularly affecting the rod cells first, followed by cone cells. This gradual loss of retinal cells results in a range of visual impairments, starting with night blindness and leading to tunnel vision and, ultimately, blindness in advanced stages. The characteristic pattern of cell death and the progressive nature of the disease sets it apart as a distinct visual impairment.

In contrast, Aniridia is a condition involving the absence of the iris, which can lead to light sensitivity and other visual issues, but it does not involve the progressive death of retinal cells. Stargardt's Disease, while also a retinal degenerative condition, specifically affects the macula and leads primarily to central vision loss without the widespread retinal degeneration seen in Retinitis Pigmentosa. Okular Albinism primarily affects the pigmentation of the retina and the optic nerve but does not involve the progressive death of retinal cells in the manner that Retinitis Pigmentosa does.