Doctor insights on:
Contact Prescription Vs 20 20
Yes: All contact lenses, even cosmetic ones, require a prescription to buy legally in the U.S. ...Read more
Is it possible for you to correct vision to 20/20 also what is 20/40 can you express it as a prescription?
Yes mostly: If the optical and retinal elements of the eye are normal, then correction to 20/20 is the usual outcome with proper eyeglass correction. 20/40 is a level of vision two lines down from "normal" meaning a line of letters large enough that a person seeing 20/20 could read that line of print 40 feet away. The prescription depends on whether you are myopic, hyperopic or astigmatic. ...Read more
Should i be concerned if my vision prescription is -5.25. What does that stand for when you normally say/see 20/20. Does that mean 20/525?
Presciption number: Those are two different things, like how much you weigh compared to how fast you can run. Your glasses or contact lens presciption is measured in units called diopters. It is the power of the lens (how curved it is) required to correct your vision back to normal clarity, which is seeing at 20 feet what other normal balanced eyes can see at 20 feet. ...Read more
Please tell me the connection between vision on an eye chart (say, 20/20 or 20/50) and eye prescription (-1 or -2.5)?
C.R.T. Is the contact lense you wear at night, then remove in the day to achieve 20/20 vision, does this work?
Yes: Corrected vision means the vision improved with glasses and/or contact lenses in place. It is implied that the prescription in the glasses and/or contacts is the best possible one for your eyes. Correctable means that the vision can be made better with glasses and/or contact lenses. ...Read moreSee 1 more doctor answer
If my two contact lenses have the power of -2.25 and -3.50, what would that be in terms of 20/20?
In manufactured: Contacts, -16.00 to +6.00 is available. Higher prescriptions can be custom made. ...Read more
Partly: Contacts have an inner shape to conform to the eye and fit well. This shape very weakly correlates with the prescription. The front contour of the lens is shaped with the power (prescription) of the lens and varies enormously, but regularly. Both of these aspects are considered when a lens is fit and prescribed. ...Read more
Contacts: Contacts can be custom ordered for almost every prescription power, both near-sighted and far-sighted. ...Read more
Contacts: Usually + or - 0.50, but they are also available with "zero" power, for special cases. ...Read more
I had contacts in an overnight case in solution now for about 2 months. Is it okay for me to still wear them now? The prescription hasn't changed.
Not enough info: In order to fit contact lenses to your eyes, you need the corneal curvature in addition to the glasses power. Also a discussion of your vision goals, such as any need to see well at near and distance versus distance only, is used to determine the initial contact lens parameters. Your eye care provider will make these measurements. ...Read more
No: Any physician or optometrist can write contact lens prescriptions. Although any physician can legally write contact lens prescriptions, ophthalmologists are the only physicians who typically do so. Optometrists are non-physician eye care providers who also write contact lens prescriptions. ...Read more
- Talk to a doctor live online for free
- Contact lense prescription to glasses
- Translate contact prescription to glasses
- Contact prescription too strong
- Ask a doctor a question free online
- Is my contact prescription the same as my glasses?
- Reading glasses vs prescription glasses
- Prescription naproxen vs aleve
- Quantity vs unit prescriptions
- Contact prescription vs 20/20