What can aid vision?

Good dna: Decent health and nutrition, sunglasses, regular eye check ups depending on your age.

Eyeglasses: Of course eyeglasses, contacts, etc but good general health, wearing sunglasses to avoid damage from uv light, eye protectors when working with machines and good nutrition also help.

Magnifiers: Much appreciated by sherlock holmes, the hand magnifier is an inexpensive and under utilized tool that can help in the early stages of presbyopia, reading in dim light and other situations. Keep a card (fresnel) magnifier in your wallet, or travel with a pocket 10 d for better quality. For distance, a telescope or binoculars can help increase image size. Both near and far vision can be aided.