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How can I tell how bad my vision is from my contact lens prescription

A 48-year-old member asked:
Dr. Daniel Bustos
17 years experience Ophthalmology
How high are the #s?: Generally on both a glasses and intact lens prescription, the higher the #s, the worse the vision is.
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A 43-year-old member asked:
Dr. Richard Scartozzi
18 years experience Retinal Surgery
No: Your prescription tells you if you are myopic, hyperopic, and/or if you have astigmatism. It doesn't tell you how far down the chart you can read, but ... Read More
A 66-year-old female asked:
Dr. Andrea Kossler
14 years experience Ophthalmology
Cataracts: See your eye doctor for exam. You may have a progressing cataract which is causing the rx change. This is called "second sight" as the cataract grows ... Read More
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A 50-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
Close: Commonly it is slightly higer like -4.50 and -5.00 but this depends in part on the goal and how long since your last examination. Also at your age t ... Read More
A 51-year-old member asked:
Dr. Ron Jones
Dr. Ron Jones answered
44 years experience Family Medicine
Comparison: I am not an eye guy, but scientifically thinking, i would get another opinion, test your vision with contacts on and contacts off. Which is better ?
A 56-year-old member asked:
Dr. Tim Conrad
33 years experience Ophthalmology
No: The glasses prescription is a necessary piece of information to determine a contact lens prescription. But there is more to it than that.
A 38-year-old member asked:
Dr. Tim Conrad
33 years experience Ophthalmology
It is : A set of parameters that determines the type, power and fit of the contact lens. It is not written in an easy to understand manner. Ask your eye doc ... Read More
A 39-year-old member asked:
Dr. Jeffrey Paul
38 years experience Ophthalmology
Depends: Prescriptions for glasses and contact lenses can change quite quickly, especially in younger individuals, and in those individuals performing lots of ... Read More
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4 thanks
A 44-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
Why?: The prescription is designed so the supplier of the lenses can get the proper ones for you. They are very specific. Why do you need to know it exact ... Read More
A 43-year-old member asked:
Dr. Richard Bensinger
51 years experience Ophthalmology
Training: If you cannot read it because the handwriting is bad, then ask for a replacement. If you want to understand what it means ask the ophthalmologist who ... Read More

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