20/20 Vision for 2020

Created by Dominika Miszewska, MD, PhD candidate
Reviewed by Bogna Szyk and Jack Bowater
Last updated: May 30, 2022
Focal length and lens power (measured in diopters) are reciprocal measurements. This calc allows conversion in either direction, by the use of the units menu. Occasionally, other quantities (such as spherical curvature) are also measured in diopters. This calc may also be used under these circumstances.
Dominika Miszewska, MD, PhD candidate
I want to
improve my eye health
Screen time 💻
Extended use of digital screens in up to 90% of users causes eye and vision-related problems.
I spend in front of a screen
3-6 hours per day
Activity 🏃
Regular and diversified exercises reduce the risk of vision impairment.
💼 How active are you at work?
Moderately active
🏡 Household activities
Less than two hours/week
🚲 Cycling, hiking, walking
Less than two hours/week
⚽ Gym, team sports
Less than two hours/week
Diet 🍲
A Mediterranean diet is associated with a lower risk of vision impairment.
🍅 Vegetables, fruits and legumes
🐄 Red and white meat
🌾 Cereals
🐟 Fish
🍼 Dairy
🔸 Olive oil
🍷 Alcohol
Smoking 🚬
Smoking directly accelerates major causes of severe visual impairment.
Do you smoke?
No, I have never smoked
Based on your score, you lead a healthy lifestyle, which does not increase the risk of vision impairment.
Example: We define vision impairment in terms of visual acuity , e.g. 20/40. An eyesight of 20/40 means that you need to be 2 meters from a road sign to see it, instead of the usual 4 meters.
Health tips 👀
A balanced diet, regular exercise and not smoking are the keys to health, part of which is good vision.
✔️ Screen time - it's good that you don't spend too much time in front of digital screens. Take care of your eyes with this simple trick:
➡️ Follow the 20-20-20 rule; every 20 minutes, take 20 seconds to look at something that is 20 feet away.
✔️ Activity - you're doing well, but there are some things you could improve:
➡️ Nice, you regularly go hiking, cycling, or even for a long stroll🚲. It doesn't have to be the Tour de France, but try to make them a bit longer than your current 2 hours per week.
➡️ Cardio and team sports every week must feel sooo good 😄 It'd be even better if it was more than 2 hours in a week.
➡️ Given the result of your household activities , we'd all like to learn your quick clean-up secrets 😍. Still, how about extending it to more than 2 hours a week?
Do you want some more information on the risks?
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