Please describe the things that can damage your vision?

Many things: Strong acids, or bases, infections such as pseudomonas or herpes or gonorrhea. Also, fungi, protozoa, and eating poorly cooked meat.Trauma, sunlight, wind, chronic diseases such as glaucoma or macular degeneration. Cataracts generally cause a reversible loss of vison.

Not simple: This is the basis for our specialty of ophthalmology established in the us officially in the early part of the 20th century.With our changing world/environment the list grows longer.