How to choose special lenses for students? _Industry News_
Because students are different from adults in terms of living habits, there are also certain differences in the choice of lenses. In response to students' eye habits, different professional lenses for students have been introduced in the current lens market to meet the needs of students. The film of the spectacle lens is different, the refractive index of the lens and the material of the lens are also different, so how to choose? Let's take a look at how to choose a student-specific lens. From the point of view of the film layer of the lens, the current film layer is also diverse. It needs to be selected according to the characteristics of the students' eyes. If students usually watch computers and other electronic products more often, they can choose radiation-proof lenses to reduce eye fatigue. If the student exercises more, the choice of lenses is not easy to break, and the better coating also has the characteristics of hardening and scratch resistance. This is because the lenses are more likely to be damaged during exercise. Generally, most children use their eyes more in their homework. Therefore, parents can choose anti-fatigue lenses when choosing lenses. The relationship between the thickness of the lens and the refractive index is very close. With the same material and the same degree, the higher the refractive index, the thinner the lens. The choice of the refractive index of the lens also depends on the individual's refractive power. Generally, a high refractive index aspheric lens will be selected if the power is relatively high. For those with low myopia, generally refractive index is fine, and the lens should be spherical. The choice of lens brands, although there are many lens brands on the market, some of the quality is not particularly good. In choosing lenses, it is better to choose some well-known lenses. For example, Essilor, Zeiss, etc. Nowadays, many students especially like dyed lenses, which look particularly trendy. However, because of the dyeing of dyed lenses, the light transmittance of the lenses will be reduced. If you wear dyed lenses indoors, it is easy to make your eyes tired, so students It is better to choose ordinary colorless coated lenses.