Answer: There are two different answers to the question. The lenses are determined by your prescription, and as your prescription changes, so must your lenses. If you wear glasses of an incorrect prescription for an extended length of time you can increase your sight loss by putting strain on your eyes. Typically you need to go for a new eye test every year or two, depending on how much your prescription is changing. Your optician will be able to give you guidance on that. The glasses frames can last as long as you want them too, provided they doing get broken. If its style that you're concerned about, you can choose new frames and have your existing lenses fitted to them. If you break your frames, the same possibility still applies.
Question: How much should i wear my glasses?
Answer: That is completely down to your prescription as well as your optician's advice. People who only have a slight vision problem normally only need to wear their glasses while performing specific activities, such as reading, watching television or using their computer. For more severe vision problems, it's like that you will need to wear your glasses pretty much all the time that you are awake. Forcing yourself to wear glasses when they're unnecessary or not wearing them when they are necessary can also place a strain on your eyes and exacerbate your vision problems. Your optician can give you very clear guidelines about when and where you need to wear your glasses if you are new to them. The longer you wear them, the more likely you are to instinctively know when you need them or not.
Question: How customisable are my lenses?
Answer: Every person has different needs for the lenses in their glasses based on what they need the glasses for; therefore most opticians will offer a wide range of customisations for their lenses. The age of the wearer can have a large impact on the configuration of the lenses since older wearers are far more likely to need bifocal lenses than younger wearers of glasses. Children are also likely to need more hard wearing lenses in their glasses due to their more rough and tumble lifestyle, which can be accommodated with Polycarbonate lenses. There are also a variety of treatments that can be made to glasses such as anti-glare coating or a scratch-resistant coating to help elongate the life of the lenses.
