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 Search for a CK Doctor near you who performs NearVision CK, as well as serves all your vision needs, such as a complete vision evaluation.
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How often should I have my eyes checked?
What does 20/20 vision mean?
What is a diopter?
How often should I have my eyes checked?
Having your eyes routinely checked is as important as visiting the dentist or having a physical. Unless you are having problems that require immediate attention, the following guidelines should be followed for routine vision care.
- Infants and toddlers — An evaluation for neurological, motor, and gross vision by 6 months of age
- Pre-schoolers — A comprehensive vision exam at ages 3 and 5
- School age to 19 years — Annual screenings for distance and near vision. If vision is normal, a comprehensive exam at age 7 or 8, pre-puberty, and ages 14, 16 or 17 is recommended
- Adults — An exam every 1 or 2 years (every 2 or 3 years if no lens correction is needed. A glaucoma test and eye health screening is recommended every year after age 35, or if a significant family history of eye problems exists
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What does 20/20 vision mean?
20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision). 20/20 basically means that you can see clearly at 20 feet what should normally be seen at that distance. Therefore, the first number (20) is always the same, but the second number changes to indicate your visual acuity. For example, if your doctor tells you that you have 20/100 vision, it means that you must be as close as 20 feet to see what a person with normal vision (normal being 20/20) can see at 100 feet. However, 20/20 does not necessarily mean perfect vision — it only indicates the sharpness or clarity of vision at a distance and does not tell you how well you see things that are close up.
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What is a diopter?
You may have heard your doctor use this word, or you may have seen it on a Web site. A diopter is a unit of measurement that indicates the amount of correction needed to change your vision to as close to 20/20 as possible. The numbers on your eyeglass prescription are diopters, and they indicate the type (convex or concave) and power of lens needed to achieve normal vision. For hyperopia or farsightedness, it's a numeral preceded by a "plus sign" (+) to indicate a convex lens. For myopia or nearsightedness, it's a "minus sign" (-) to indicate a concave lens.
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You have more choices for vision improvement than ever before. Learn which vision procedure may be right for you by taking our survey.
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Presbyopia affects reading vision for most people by the age of 40. NearVision CK is performed using the ViewPoint® CK System, the only FDA-approved technology for presbyopic patients who want to improve their near vision. Click here to learn more about presbyopia.
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(CK
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