Get close to the screen until you see the word 'HELLO' below sharply.
Slowly move your head back until 'HELLO' becomes blurred (to edge of blur).
Record the exact distance in centimeters from your eyes to the screen.
( using ruler/measuring tape )
If you don't know your
prescription, you can leave it empty.
Note: This is just a project and not intended for medical use.
MOVE BACK TILL TEXT BLURS:
Over-prescription
If perscribed value more than
calculated value
May cause discomfort, headache,
and eye fatigue, and increase the risk of your vision
deteriorating further
Under-prescription
If prescribed value less than
calculated value
same causes as over-perscription
Correct prescription
Current Prescription =
Calculated Value
CURRENT PRESCRIPTION
(optional)
BLUR DISTANCE
CALCULATED VALUE
Want to improve your eye sight? Check Out
endmyopia.org!
Note: I dont own endmyopia, but its a great site that has
helped me improve my own eyesight :)