The choose and buy of sunglasses and use common sense

A, customers can through the following method to simply identify the immanent quality of the lens: 1, the degree of lens should meet the requirements of the flat lens, and should not have affect vision optical spot disease. Simple identification method for, can put sunglasses in sight, observations of distant places through the lens, such as window frame or door frame, then glasses from top to bottom and move around, goals should not have swings and wavy deformation. Can also be observed under fluorescent lamp images on the surface of the lenses, mobile sunglasses makes fluorescent images appear in different parts of the lens, light tube image deformation is preferred, the polarized sunglasses on the market at present, most is to use the thickness of 0. 7 mm resin polarized lens, due to the thin lens, is easy to produce deformation in the assembly, when the choose and buy should pay special attention to. 2, the color of the lens can't partial, should make the distortion of the color of the surrounding environment. Before without wearing sunglasses to observe the color such as red, green, yellow, and then put on sunglasses, observing the same object, observe the color of the two can't partial color, otherwise it will reduce the recognition ability of traffic lights. Color sunglasses lenses for special attention should be paid to the identification of. Sunglasses factory 9105 polarized sunglasses, improper use common sense to wear sunglasses was susceptible to eye disease, cloudy and there is no need to wear sunglasses indoors. Some people all occasions, regardless of sunlight intensity, even during the evening and in the evening, also wearing sunglasses when watching a movie, TV, it will inevitably increase burden of eye accommodation, cause eye muscle tension and fatigue, make the vision loss, blurred vision, serious can appear the symptom such as dizziness, not long. For visual system development still is not perfected of infants, children and should not be wearing sunglasses. In addition to the glass of sunglasses, other sunglasses lens material abrasion resistance is not high, the user should always pay attention to the surface of the sunglasses, when wear affect resolution, should be replaced in a timely manner. Add is that when the choose and buy sunglasses must feel under the bridge of the nose to see if there is discomfort.
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