The way glasses indicates it should be replaced
As we all know,our optical frame should change at regular time.we usually wear it for one to two years! But we sometimes can not wear for such long time ,how should we judge then we should buy new one?
Here comes several points that may help you:
1)The lens become yellow;this indicates the lens get aged.-The parameter of the lens have changed which may not suitable for your wear.
2)The lens film falls off.-Once the film falls off,it can not be repaired .This will affect the way we watch and will not comfortable any more.
3)The painting layer of the frame is peeling off.-If this happens,the entire frames will not beautiful.And the alloy copper will corrode the skin.
4)Frame deformation-This can not be repaired too.when we wear,we will feel uncomfortable.
5)The glasses don't match your eyes any more.-If we wear too long and our daily work and rest is irregular will lead to deepening eye strength.
