Wear sunglasses that block 99–100% of UVA and UVB rays. When doing activities that could be dangerous to your eyes, like yard work, sports, or home repairs, wear safety goggles or polycarbonate lenses that resist impact.
Eat healthy foods
Eat a balanced diet with foods that contain nutrients like omega-3 fatty acids, lutein, zinc, and vitamins C and E. These nutrients may help prevent age-related vision problems like macular degeneration and cataracts. Some foods that contain these nutrients include:
Dark, leafy greens: Spinach, kale, collards, broccoli, and carrots
Oily fish: Salmon, tuna, and halibut
Citrus fruits: Oranges, tangerines, and lemons
Other fruits and vegetables: Tomatoes, zucchini, green peppers, melon, and peaches
Seeds and nuts: Contain omega-3 fatty acids
Take breaks from screens
Every 20 minutes, look away from your computer or mobile device and focus on something 20 feet away for at least 20 seconds.
Get enough sleep
Along with exercise and a healthy diet, adequate sleep can help preserve your vision. Make sure to turn your screens off at least an hour before bedtime.
Avoid smoking
Smoking can increase your risk of serious eye issues that could lead to blindness. Quitting smoking can also help lower your risk of eye diseases like macular degeneration and cataracts.