Know your family's eye health history. Many eye conditions are genetic. Talk with the older members of your family to get a good picture. Wearing sunglasses is crucial to eye health. Just as with any other area of the body, the sun's UV rays can cause damage to your eyes. Too much exposure can cause conditions like cataracts and cataracts. Any sunglasses you decide to wear ought to protect your eyes from both UVA and UVB rays.