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

A 38-year-old member asked:
Dr. Jay Pepose
38 years experience Ophthalmology
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
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A 55-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
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 56-year-old member asked:
Dr. Matheson Harris
15 years experience Ophthalmology
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
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A 41-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
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 41-year-old member asked:
Dr. Matheson Harris
15 years experience Ophthalmology
No: Your prescription is the power of the lens which gives you the best possible vision. It doesn't say anything about what that level of vision is. You ... Read More
A 55-year-old member asked:
Dr. Richard Tholen
40 years experience Plastic Surgery
The way the eyes are: This is just the way your friend's eyes developed, and the solution is glasses or contact lenses chosen to correct each eye's vision independently. La ... Read More
A 35-year-old male asked:
Dr. Jon Fishburn
29 years experience Ophthalmology
It's possible : Sand has a lot of ground up minerals & rock, and who knows what else. If you get sand in your eyes, it's possible that some of the particles are s ... Read More
A 48-year-old member asked:
Dr. Matheson Harris
15 years experience Ophthalmology
Internet chart: There are many charts available online to check your eyes individually. Search for snellen chart and follow the directions on how far away to stand fr ... Read More
A 45-year-old member asked:
Dr. Matheson Harris
15 years experience Ophthalmology
Try this: Use courier new font and print out some letters at size 12. Hold these about 5 feet away and test them one eye at a time. This is approximately 20/2 ... Read More
A 54-year-old member asked:
Dr. Michael Ham
26 years experience Ophthalmology
Yes: Yes, in my practice we need to inspect them and then have the client release liability for the frame and any possible defects that we can not detect b ... Read More
A 41-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
No: The relationship between lens power and vision is a sliding scale that is irregular and also depends upon your age and whether you are myopic or hyper ... Read More
A female asked:
Dr. Matthew Niemeyer
19 years experience Ophthalmology
There : There is no simple answer to your question. Dry eyes can result from multiple causes and frequently more then one thing is going on. Because of this ... Read More
A 54-year-old member asked:
Dr. Tim Conrad
33 years experience Ophthalmology
No: Colored contacts are the only way to do this.
A 54-year-old member asked:
Dr. Sandra Lora Cremers
24 years experience Ophthalmology
If you feel eyes: Contact lenses cause a general decrease in oxygen to the cornea. They can also cause discomfort in the form of foreign body sensation especially when ... Read More
A 32-year-old member asked:
Dr. David Kira
20 years experience Ophthalmology
Maybe: Early treatment for amblyopia usually has the best visual outcome. Therapies such as patching, glasses and contact lenses work for many patients but ... Read More
A 46-year-old male asked:
Dr. Tim Conrad
33 years experience Ophthalmology
Your choices are: Glasses, contact lenses or laser. There is no magical or "natural" technique that works.
A 66-year-old male asked:
Dr. Oscar Novick
57 years experience Pediatrics
Eye doctor: Different states have different laws. Check with your city's board if health as to your eye doctors claim. Ideally it doesn't hurt to get your eyes di ... Read More
A 48-year-old member asked:
Dr. Tim Conrad
33 years experience Ophthalmology
The best one: Is the one recommended by an experienced contact lens fitter. Just like buying shoes for your feet, you need the one that fits the best.
A 44-year-old member asked:
Dr. David Kira
20 years experience Ophthalmology
Usually not: Sometimes glasses can be buffed but generally, scratches you can feel with you fingernail means the lens needs replacement.
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A 39-year-old member asked:
Dr. Matheson Harris
15 years experience Ophthalmology
You don't: Your prescription is the power of the lens which gives you the best possible vision. It doesn't say anything about what that level of vision is. You ... Read More
A 25-year-old female asked:
Dr. Rebecca Gliksman
37 years experience Internal Medicine
Need for prescriptio: Have your uncle sign on to Healthtap Prime, then a physician who is licensed in California can prescribe his medications. Would also consider a l ... Read More
A 52-year-old member asked:
Dr. Sheron Marshall
24 years experience Ophthalmology
Good!: The optometrist should perform a comprehensive eye examination. Please discuss your vision goals with the optometrist--do you want to see well far aw ... Read More
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A 21-year-old male asked:
Dr. Solomon Gelbart
Specializes in Ophthalmology
Depends: Everything depends on the reason for blindness. If it is acquired cataract or other media opacity usually vision can be restored. Retinal and optic ne ... Read More

90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more. Get help now:

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