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Is there a way to determine my visual acuity from my contact prescription

A 29-year-old member asked:
Dr. Jay Pepose
Ophthalmology 40 years experience
No.: The contact lens prescription can give you an idea of the degree of nearsightedness, farsightedness, or astigmatism you may have, but it does not let ... Read More
Dr. Yale Kanter
Ophthalmology 62 years experience
Visual acuity: Visual acuity is a measure of how well the eye sees without and with the best correction possible. Measuring the power of the contact lens yields the... Read More
Dr. Richard Bensinger
Ophthalmology 53 years experience
No: There is not a direct correlation between the refractive numbers on an eyeglass prescription or the numbers on a contact lens prescription. You need ... Read More
A 49-year-old member asked:
Dr. Richard Bensinger
Ophthalmology 53 years experience
No: There is not a direct relationship between Snellen acuity (like 20/20 or so) and the diopters printed on an eyeglass prescription which is the formula... Read More
A 48-year-old member asked:
Dr. Matheson Harris
Ophthalmology 17 years experience
No, not always: Visual acuity is a measure of how well you see. In most cases this reflects on what your prescription might be but it can't estimate it exactly. The... Read More
A 35-year-old member asked:
Dr. Richard Bensinger
Ophthalmology 53 years experience
Depends: I am guessing that your vision uncorrected is 20/40 (not too bad). The prescription to correct this depends upon how it got there. You could be myop... Read More
A 37-year-old member asked:
Dr. Daniel Bustos
Ophthalmology 19 years experience
Near-, or farsighted: If the first number (the sphere) on your prescription has a + notation before it, you are hyperopic (or farsighted), which means you can see better fa... Read More
A 33-year-old member asked:
Dr. Steven Hill
Family Medicine 24 years experience
Simplistic: The simplistic answer is that a good optometrist/ophthalmologist knows what acuity corresponds with what prescription. I don't think you will find a... Read More
A 43-year-old member asked:
Dr. Sadiqa Stelzner
Ophthalmology 29 years experience
With or without : It depends if you are corrected without any other eye issues then you probably can see 20/20. You cannot see snellen chart without correction therefo... Read More
A 48-year-old member asked:
Dr. Richard Bensinger
Ophthalmology 53 years experience
No: The relationship between lens power and the standard vision fraction like 20/20 is not linear. These two items do not interconvert.
A 34-year-old member asked:
Dr. Steven Hill
Family Medicine 24 years experience
Vision screening: A rough acuity can be gained from any number of apps/sites - search for vision/eye exam and follow the instructions. If you are wondering about read... Read More
A 37-year-old member asked:
Dr. Jay Pepose
Ophthalmology 40 years experience
There are a number of on-line tests of near and distance acuity. One good site is www.Preventblindness.Org/eye_tests/. There are also some vision test... Read More