Abstract: the main reasons for adult wearers to change lenses are: the degree of glasses needs to be adjusted due to the change of eye degree; Necessary replacement of spectacle lenses (such as scratches or lens defects caused by inadequate maintenance). A survey shows that among consumers using resin lenses, 29.2% only replace a pair of glasses every three years or more, and 36.4% only replace glasses when they are broken. In fact, if the lenses are “extended service” , it is likely to accelerate myopia., Spectacle lens is also a kind of consumer goods. It is very delicate. Once the mirror surface is scratched, it will obviously affect the optical correction performance. Not only does it not play a good role in improving vision, but it will cause a series of visual fatigue., (tips for using contact lenses: according to optometry research, the service life of soft contact lenses is only 2600 hours. If you wear them for 10 hours a day, you can only wear them for eight and a half months. In fact, if you wear them for more than six months, 50% of the lenses will have problems. Therefore, the service life of a pair of contact lenses depends on the service time every day. Therefore, contact lenses can be used for a period of time After the workshop, it should also be replaced to protect eyesight!), I. about the lens replacement cycle of young wearers, because young people are still in the stage of eye organ development and the peak of eye use., Due to learning and other reasons, you will use your eyes closely for a long time, and there will be ciliary muscle regulation spasm, so the degree will change and deepen very quickly., Therefore, it is recommended that teenagers should have optometry once every six months (medical optometry) and change their glasses or lenses at the same time.,
survey shows that among consumers who use resin lenses, 29.2% change a pair of glasses every three years or more, and 36.4% change glasses only when they are broken.
in fact, if the lens is “extended service”, it is likely to accelerate myopia.
and
glasses are also consumer goods. They are very delicate. Once the mirror surface is scratched, it will obviously affect the optical correction performance. Not only can it not improve vision, but it will cause a series of visual fatigue.
(tips for using contact lenses: according to optometry research, the service life of soft contact lenses is only 2600 hours. If you wear them for 10 hours a day, you can only wear them for eight and a half months. In fact, if you wear them for more than six months, 50% of the lenses will have problems. Therefore, the service life of a pair of contact lenses depends on the service time every day. Therefore, contact lenses can be used for a period of time After the workshop, it should also be replaced to protect eyesight!)
I. about the lens replacement cycle of adolescent wearers
because adolescents are still in the stage of eye organ development and the peak of eye use.
and
will use the eyes closely for a long time due to learning and other reasons, and there will be ciliary muscle regulation spasm, so the degree will change and deepen very quickly.
therefore, it is recommended that teenagers should have optometry once a half a year (medical optometry) and change their glasses or lenses at the same time.
II. On the lens replacement cycle of adult wearers
experts suggest that adult myopia patients replace lenses or glasses at least once in two years. Adult wearers of
and
change their lenses mainly because: the degree of glasses needs to be adjusted due to the change of eye degree; Necessary replacement of spectacle lenses (such as scratches or lens defects caused by inadequate maintenance).
III. about the lens replacement cycle of elderly wearers,
the elderly generally wear presbyopia glasses (hyperopia glasses). Presbyopia symptoms are mainly caused by lens aging.
The crystal of glasses will age with the increase of people’s age, so the lens power of the elderly should increase accordingly.
and
have no unified regulations on the replacement cycle of lenses for the elderly. As long as the wearer feels hard to see things and his eyes are sour and swollen, he should replace them in time.