Why does albinism cause vision problems? in your own words

Individuals with albinism do not have clear vision due to an underdevelopment of the central part of the retina called the macula. The macula is responsible for sharp, detail vision which works most well in bright light. The retina is very pale because of the lack of pigment.

Your optic nerves can be underdeveloped without enough melanin. Albinism is a disorder in which your body has little or no melanin production.

Explanation:

i think the miocene epoch spans the time from 23 million to 12 million years ago.