Contact lens
Contact lenses, also called contact lenses, are lenses worn on the cornea of the eyeball to correct vision or protect the eyes. According to the hardness of the material, it includes three types: hard, semi-hard, and soft. Contact lenses not only bring great improvements to patients with refractive errors such as myopia, hyperopia, and astigmatism in terms of appearance and convenience. Moreover, it has a wide field of vision and lifelike vision. In addition, it has a special effect in controlling the development of myopia and astigmatism in adolescents, and treating special eye diseases.
It is related to lens material, lens moisture content and lens design.
Optical zone
Refers to the central area of the lens through which external light enters the pupil, and the refractive power of the lens acts on this part.Generally transparent lenses are freshwater blue, and there are also colorless or colored contact lenses.
Generally, the base curve of the soft lens should be 0.6-0.8mm larger than the curvature of the front surface of the cornea.
That is: a water content of less than 38% is called a low water content lens, 42%-60% is a medium water content lens, and a water content greater than 60% is called a high water content lens.
After hearing so much about the professional knowledge of contact lenses, do we have a clearer understanding? We also have production and sales influence glasses, welcome to inquire!
Thanks for reading.
Sophie Yang
004@mikeeyewear.com