20/20 Vision Calculator for 2020
Assess your risk of vision impairment based on lifestyle factors
Vision Health Assessment
Personal Information
🏃Activity Level
Regular and diversified exercises are associated with a lower risk of vision impairment.
🍲Diet Assessment
A Mediterranean diet is associated with a lower risk of vision impairment.
🚬Smoking History
Smoking directly accelerates major causes of severe visual impairment.
Vision Health Assessment Results
Health Recommendations
Vision Acuity Reference
20-20-20 Rule
Every 20 minutes
Look at something 20 feet away
For 20 seconds
This simple rule helps reduce eye strain from prolonged screen time.
Eye Health Tips
Eat foods rich in omega-3 fatty acids
Protect eyes from UV rays with sunglasses
Take regular breaks from screen time
Get regular eye exams
Maintain healthy blood pressure and weight
Understanding 20/20 Vision and Eye Health
What Does 20/20 Vision Mean?
20/20 vision means you can see clearly at 20 feet what should normally be seen at that distance. The first number represents the distance you stand from the chart (20 feet), and the second number represents the distance at which a person with normal eyesight could read the same line.
Can Vision Be Better Than 20/20?
Yes! Some people have 20/15 or even 20/10 vision, meaning they can see at 20 feet what others need to be at 15 or 10 feet to see clearly. This superior vision is often found in pilots and athletes, affecting about 1% of the population.
Risk Factors for Vision Loss
- •Age: Vision naturally deteriorates after 40 due to lens changes
- •Smoking: Damages blood vessels in the eye
- •Poor Diet: Lack of antioxidants and omega-3 fatty acids
- •Sedentary Lifestyle: Reduced blood flow affects eye health
- •Screen Time: Digital eye strain and blue light exposure
⚠️ Medical Disclaimer
This calculator is based on the CONSTANCES cohort study and provides an assessment of vision impairment risk factors. It is for educational and informational purposes only and should not replace professional medical advice, diagnosis, or treatment. Always consult with a qualified healthcare provider or ophthalmologist for proper eye examinations and medical decisions regarding your vision health.
Practical Tips for Eye Health
🏃♂️ Stay Active
- • Regular exercise improves blood circulation
- • Take walking breaks every hour
- • Aim for 30 minutes of activity daily
- • Include strength training and cardio
🥗 Mediterranean Diet
- • Eat plenty of fruits and vegetables
- • Include fish rich in omega-3s
- • Use olive oil as primary fat source
- • Limit red meat consumption
💻 Screen Health
- • Follow the 20-20-20 rule
- • Adjust screen brightness and contrast
- • Position screens 20-26 inches away
- • Use artificial tears if eyes feel dry