What does +2 mean on eye test?
This is marked as a number, such as ‘ADD +2.00’, meaning ‘add 2.00 dioptres of magnification to the sph value’.
Which eye number is normal?
20/20 vision is normal vision acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at a distance.
What do the numbers on an eye chart mean?
An eye chart measures visual acuity, which is the clearness or sharpness of vision. The top number is your distance in feet from the chart. The bottom number is the distance at which a person with normal eyesight can read the same line. For example, if you have 20/30 vision, it means your vision is worse than average.
What is 2.00 eye prescription?
If your prescription reads -2.00, that means you are two diopters nearsighted. If your prescription said +3.50, you are three and a half diopters farsighted.
What do the numbers mean on my eye test results?
Understanding your eye test results: the numbers explained. The numbers on your spectacle prescription are shown for your right eye (indicated as RE or sometimes OD – the Latin for oculus dexter, meaning right eye) and your left eye (LE or OS – oculus sinister).
What does +a plus mean on my vision test results?
A plus number indicates long-sightedness, so objects up close appear more blurred or close vision is more tiring on the eyes. The sphere value moves up and down in 0.25 increments, anything smaller is imperceptible. Patients will commonly fall within the -25.00 or +25.00 range and the majority between +4.00 or -4.00.
What is the second prescription for near vision?
The second prescription shows the patients complete distance prescription for the right and left eye followed by a reading addition value of +2.25. This value is the amount to add on to the distance SPH values to ascertain what the full Near prescription should be. For example: (+2.00) + (+2.25) = (+4.25).
What do the numbers on my nearsightedness chart mean?
The numbers indicate the level of severity of your nearsightedness or farsightedness. Generally, the further away from zero (whether the number is positive or negative), the worse the eyesight and the greater the need for vision correction.