親記事
引用 |
|
Remove card https://www.expertbrand.com/differin-ointment-for-acne-00b1.pdf#ape adapalene gel coupon Loss of photoreceptors, or light-sensitive nerve cells, is a major cause of blindness in conditions such as retinis pigmentosa, diabetes-related blindness, and age-related macular degeneration. Conditions such as these affect many people, and there is so far no effective treatment. Researchers have been exploring the possibility of somehow replacing the photoreceptors, which come in two types - rods which help to see in low light conditions, and cones, which help differentiate colors.
|