This also why have I left behind that many eyeglasses reason. Self-recovery cycle and from Recovers the process: Trades eyeglasses every time, namely falls 100~150 degrees is one cycle, one cycle divides into three stages. The first stage, adaptive phase: ray ban sunglasses online This stage is most painful, just put on the low number of degree the eyeglasses, needs under a stable environment, this time eyeglasses to low The number of degree eyeglasses have not adapted, specially the first week, very easy to produce the eye strain, therefore this stage may adopt before the eyeglasses at the right moment alternately uses, adapts the low number of degree eyeglasses gradually, simultaneously the vision gradually is also restoring.
Generally will adapt for one month . The second stage, restores the stage: Generally will continue for 2~3 months, insisted before the use, will practice the skill, can be gradually clear at present. The third stage, conclusion stage: Is the last month, can have with the first roberto cavalli sunglasses cheap stage overlaps, the characteristic is the vision restores, generally is the vision To 4.7~4.8 time. Because and the eye adapted the eyeglasses gradually, will restore the speed to reduce speed, this time might go to the optical shop to match the next eyeglasses, fell 100~150 degrees eyeglasses again.
Scene appropriate practice scene: Scene one: The computer experience tells us, The long time treats the computer work, the surfer to be able to harm the vision, aggravates the eye strain. What matter is really this, according to mine experience, the reason that faces the computer to be able for a long time to create regards weary and the vision drops, the primary cause is with the eye custom mistake and monitor screen brightness Strong result. If does not change regards near custom, even if is looks at the non-photo source the entity book, also will cause the vision to drop. In fact, I must face discount sunglasses above nearly every day the computer 15 hours, even may say flankly, my vision is depending on the long time facing the computer talent Restores gradually. How correct use computer: 1st, must choose the appropriate monitor, certainly must use the liquid-crystal display.
First, the liquid-crystal display is preventing the radiation aspect to have the congenital superiority, because it does not have the radiation. In electromagnetic wave guard side The surface, the liquid-crystal display also has the unique superiority, it will use the strict seal technology to come from driving circuit's few electromagnetic wave seal in the monitor, but ordinary monitor cheap sunglasses online to send out thermal the need, must let the internal electric circuit and the air contact as far as possible, Such internal circuit produces electromagnetic wave also massively outward “divulging”.