Doctor insights on:
What Do Prescription Numbers Mean In Eye Glasses
It's a math formula: The prescription tells the lens maker how to shape the lens (glasses, contacts) that will best correct your vision. The first number is the amount of nearsightedness (-) or farsightedness (+) to be corrected. The next number is the amount of astigmatism to treat and the number after the "x" is the angle of the astigmatism to be treated. ...Read more
Yes.: -3.25 would be the power of the contact lens. Assuming you are wearing a soft lens, You also need the other parameters which include the type of contact lens, the base curve and the diameter ...Read more
Easy: Take the distance sphere power and add 1.00 to it and then take the near add power and reduce it by 1.00. This is my typical calculation for computer glasses. For example, your right lens is -2.25 +1.25 x 30 add: +2.00, your computer glasses would be -1.25 +1.25 x 30 add: +1.00. Hope this helps. ...Read more
What is best test for finding out prescription eye glasses strength for a 4 yrs old? He is short sighted.
Eye glasses: You need to take the little boy to an eye doctor. The wrong prescription can make things worse. Please see a professional. Peace and good health. ...Read more
Can you assist , need an explanation of my eye prescription. is it worth buying eye glasses? rt: -0.25 sphere, -0.50 cylinder, 168 axis. Lt: 0.75 sp
I recently got a stronger prescription for my eye glasses, it's been a week and i still haven't gotten used to them. I feel dizzy and a little bit of ?
May be normal or too: The scrip may be too strong or it may be just difficulty adjusting.Try for another week in short intervals.If you are still having trouble, go back to the doc. ...Read more
Things to try: There are apps available for smart phones that can help you . If you google pd measurement you will get instructions-- may need a helper set of eyes. ...Read more
Can't be fixed: Scratches generally cannot be fixed without remaking the lenses. ...Read more
Cosmesis: For most people, it is a matter of cosmetics. Some people do not like to wear glasses. For a few people, contacts provide better vision than glasses can. There are also some eye conditions where adequate vision can only be achieved with hard contacts. See your eye doctor for a more detailed discussion as it pertains to you. ...Read more
Glasses vs contacts: First of all, glasses are cheaper and there are no side effects to glasses. They're very easy to use and can offer protection to your eyes. Contact lenses, only offer cosmetic advantages, except in very rare eye conditions, which are solely treated with contacts, but those are rare. Contact lenses need to be cared for & fit properly, are more expensive, & can have side effects or even intolerance. ...Read more
Factory made: Lenses in most optical shops are ordered in the correct prescription or made on site with computer driven machines. The optician then marks the optical centers, cuts them in a machine called an edger to fit the frame, and then adjusts them to the patients head. ...Read more
Optometrist: Optometrists are trained in the diagnosis and treatment of eye disease, and are better qualified to refract and prescribe eyeglasses or contact lenses. Most ophthalmologists have technicians who generate the rx for glasses. Good optometrists will refer you to ophthalmologists when you need surgery. See your optometrist once a year, unless you have a condition which requires more frequent visits. ...Read more
Not really: This has been tested repeatedly and there are no harmful rays coming from a video screen, even an old one. Don't worry about this. ...Read more
Depends: If your vision has changed since the last time you got glasses, you'll certainly want to be examined to get a new prescription. If you just want a different style frame/lens shape, the glasses providers can read your prescription from current glasses & adapt it to new frames /lenses of your choice. Still a good idea to have yearly eye exam to check for glaucoma, cataracts, macular degeneration…. ...Read more
Will help some: A pinquecula is the result of irritation to the lining tissue of the eye called conjunctiva. Sun, wind, contact lenses and air pollutants will aggravate the problem so the glasses will help. Keep the eyes well lubricated with artificial tears. If it becomes reddened and inflamed you should see an ophthalmologist. It can be removed with minor surgery but may recur. ...Read more
It can be: If you are in need of prescription lenses and wear clear glasses, you may be straining through them. Alternately, the plain lenses may actually not be of very good quality and may be warped. This can create a "fake prescription" in the lenses that is just enough to affect you. You are better off not wearing the glasses. ...Read more
No: It does make sense to be wearing glasses full time prior to changing to contact lenses. Even if you wear contact lenses, it is important to have a backup pair of glasses to use just in case you develop an infection , or allergic problem that requires a break in your contact lens wear. ...Read more
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