[header] How to prevent development of cataracts [title] Protect your eyes from the sun. [step] Wear sunglasses and a wide-brimmed hat if you need to be outside. Choose sunglasses that are polarized to reduce eyestrain from glare sensitivity. 
They should also have an ultraviolet element to protect your eyes from uva and uvb rays. These rays can cause cataracts, with uvb rays also potentially leading to macular degeneration.