Presbyopia, describes the condition where as part of normal aging, the eyes lose their ability to focus close up. This usually becomes noticeable around age 40. The muscles in the eye slowly lose their elasticity, which makes it difficult to see clearly at different distances. This becomes most noticeable when reading small print especially in low light conditions or when reading for long periods of time. Welcome to middle age!
How to use our reading glasses chart:
Print this page out on your printer. You cannot use this chart by looking at your monitor due to size and resolution differences among computers. The chart should print out at 7.5 inches wide.
To find the right lens power for you, read the chart at the customary reading distance of 14-16 inches. The first line you have difficulty reading is the suggested lens strength for you at that distance. To determine your correction for computer distance, refer to the directions above for a more detailed explanation.
If you have a prescription from an eye care professional and are unsure of what lens power would be best for you, email your prescription to firstname.lastname@example.org for help.
Not everyone can be corrected with ready-made readers. People who have a lot of astigmatism usually require prescription reading glasses for the best correction. Slight amounts can usually be sufficiently corrected in ready-made reading glasses. For larger astigmatism corrections, ready-made readers will correct you but they will not be comfortable for extended periods of time. If your correction in both eyes is very different, it may be hard to find a correction that is suitable for you. With high corrections (usually a +3.00 and above), prescription reading glasses will give you the best correction because any variance in your P.D. (the measured distance between your eyes) may hamper your vision.