Tips for healthy vision
Take screen breaks
Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds. Reduces eye strain significantly.
Good lighting matters
Avoid reading in dim light or with screens as your only light source. Ambient lighting reduces contrast fatigue.
Eat for your eyes
Leafy greens, fish, and orange vegetables contain lutein, zeaxanthin, and omega-3s — nutrients linked to long-term eye health.
Wear UV protection
UV exposure increases the risk of cataracts and macular degeneration over time. Wear sunglasses with UV400 protection outdoors.
Annual eye exam
Most adults should see an optometrist every 1–2 years, even without symptoms. Many eye conditions have no early warning signs.
Stay hydrated
Dehydration contributes to dry eyes. Aim for 6–8 glasses of water per day and consider a humidifier in dry indoor environments.
What is color blindness?
Color blindness — more accurately called color vision deficiency — is the reduced ability to distinguish between certain colors. It affects approximately 1 in 12 men and 1 in 200 women worldwide. The most common form is red-green color blindness, where the eye's red or green cone cells are absent or function differently than typical. According to the American Optometric Association, color vision deficiency affects approximately 8% of males and 0.5% of females.
Most people with color vision differences are not fully "blind" to color — they simply perceive certain hues differently. Many live their entire lives without knowing they have any difference in color vision.
How accurate is an online color blind test?
Online tests provide a useful initial screen. However, results can vary based on your screen's color calibration, brightness settings, and ambient lighting. They are not a substitute for a clinical eye exam. If your results suggest possible differences, visit an optometrist for a proper assessment.
What are the types of color blindness?
The most common types are deuteranomaly (reduced green sensitivity) and protanomaly (reduced red sensitivity), both classified as red-green color blindness. Tritanomaly (blue-yellow) is rarer, and complete color blindness (achromatopsia) is very rare.
Can color blindness be cured?
Most inherited color blindness has no cure. However, special tinted lenses and apps can help some people distinguish colors more easily in daily life. An optometrist can discuss your options based on your specific type and severity.
Is color blindness hereditary?
Most cases of color blindness are inherited and present from birth. It is more common in men because the responsible genes are located on the X chromosome. It can also occasionally develop later in life due to eye disease, medication, or injury.
How often should I get an eye exam?
Adults with no known vision problems should have a comprehensive eye exam every 1–2 years. If you have diabetes, a family history of eye disease, or existing vision issues, more frequent visits are recommended. Children should be screened before starting school.