Normal persons will be affected with presbyopia in their forties. The signals are that they put newspapers farther and turn the lights brighter. If you find you are beginning to take the newspapers a long distance,turn the read lamp very bright,would better go to hospital inception of receive optometry first。 Because these are the eyes began to “presbyopia" of the precursor. Experts advise: just as white-headed old and will be the same as that as one of the 40 eyes may gradually after the " presbyopia".

At this point not to evade, the best time check with the appropriate eyeglasses. "Street has been good with only normal reading wear glasses can not become a daily 'main'." Experts stated that presbyopic glassed that are made beforehand will bring problems like dizziness of your head, acid eyes and so on.

When you find that you have presbyopic eyes, you should wear presbyopic glasses in time.

"In the recent eyes are very vague, far and near are the same." Many of the elders have the feeling. “Naturally speaking, on average forty-year-old persons turn presbyopic when the obvious signal is they turn the lights brighter because seeing things nearby needs more light. It may show the control ability of crystal substance gets weaker, and the physiology harden begins."

Experts say, for this type of phenomenon, a lot of middle-aged people subconsciously avoided, they would rather to look hardly than to be easily just by configured cheap eyeglasses. However, when the degree becomes deeper and deeper, you can't see words on paper clearly no matter how distance you take it and how bright light you use, this can not be changed by individual minds. Once the phenomenon of presbyopic eyes appears, you'd better go to the hospital for optometry of eyes in order to know the degree precisely and choose proper presbyopic glasses.

Don’t buy reading glasses on the street just because of the low price.

Many optical shops will public with some inexpensive reading glasses,and many people usually think that as long as the right to buy under the free trials. Experts suggest that such glasses can also be bought,but only occasionally be used,and in the case of less demanding on the eyes. These glasses are not tailor-made and they're the same degree in right and left eyes.

But lots of crowds for "presbyopia" by each bond of lenses for each eye, and also had astigmatism and so on,at that time wearing so well,when wearing too long is easy to come about inanimate objects. Personalized configuration of reading glasses is so important,citizen do not covet cheap lead to arbitrarily choose the reading glasses which has made earlier, in fact only as long as the optometry degree precision inspection,still can choose the reading The width of face and the distance of eyes is quite different for anybody else,.visual center is quite different,too,these are unable to meet the needs of the canned reading glasses in the street.