The Common Knowledge About Spectacles With Frames And Contact Lenses

Experts have warned that people who wear frame glasses do not throw away old prescription sunglasses when they buy new ones. After long time work in front of the computer screen, the following phenomenon will occur to your eyes: tears, foreign body sensation, unclear or even decreased vision.

And the wearing of the original spectacles will protect your eyes from the permanent hurt because of the fatigue brought by excessive asjustment. In general, the strength of old glasses is 1.25 diopter less than that of new ones. Wearing prescription eyeglasses to look at computers is the most appropriate. The normal people's eyes are born with self-adjusting ability. In principle, they need no regulation for distant objects.

When the body moves within 5 meters distance, you have to adjust your eyes to see it clearly. As the object moving more close, the greater is the intensity of the adjustment, so that the nearby object can be seen clearly. The usual watching of things close to you will lead to the usual application of the adjustment protency of your eyes. If the crystal, ciliary muscle and the ligament are in tension for long time, it may lead to tears, foreign body and other discomforts. Therefore, it is of great benefit to your eyes if reducing 1.25 diopter of myopic eyewear when watching close things. Following is points for attention of contact lenses. First, look at the instructions carefully. Grasp strictly the ways and requirements to out on and put off contact lenses. No matter which kind of contact lenses you wear, you should put them off and clean and disinfect them according to the rules. You had better not wear contact lens when sleeping in order to give your corneas a space to breathe naturally and then decrease the possibility of the onset of complications.

You should be gentle when removing lenses, in order to prevent damages to the lens and cornea. If finding eyes pain, photophobia, tearing, hyperemia and others when wearing lenses, you are supposed to take them out into the box, stop wearing for the moment and go to hospital in time. Meanwhile, you should bring with the box and lens that has not yet been cleaned, in order to make the necessary laboratory examination and choose more effective treatment options according to the test results. The lens that temporarily doesn't need to use should be disinfected and stored in a box with sterile saline solution or whole care fluid, in order to prevent contamination and dryness. Recently, there appear disposable contact lenses to reduce infection after using. But you still have to clean and disinfect them in time. Normally moving 0.5 to 1 millimetre of lenses on the surface of cornea would not cause visual changes and discomfort.