What is the difference between anti blue light and anti radiation glasses?
block ultraviolet and electromagnetic radiation, but radiation resistant glasses cannot prevent blue light...
What does HMC lens refer to
HMC lenses are high transmittance lenses that can effectively reduce glare and reflection. HMC is the abbreviation for "Hard Multi Coating", which means hard multi-layer coating....
What is my face shape, and how to choose glasses for your face shape
Frame style for heart face shape,triangle face shape,square face shape,round face shape,oval face shape......
Myopia prevention and control (Myopia-Nearsightedness)
About what is Myopia, how it comes, how to prevent and control myopia, what period should pay more attention during child grow up......
Astigmatism (Theory, Pathophysiology )
Aricale about what is astigmatism. Understanding the theory would be very helpful during the astigmastism examing, prevention, practising ....
Forwarding cataract FAQ, need to give patients popular science to use
Articale about why get cataracts, cataract surgery ask, how IOL sould be selected......
Some parents ask: Does children need to wear glasses all the time?
Some doctors say they wear only when they read and write, and the rest of the time if children can see clearly, they don't have to wear them, while others say they have to wear them all the time, except when they sleep....
Why small children need cycloplegic refraction?
Because the child's lash muscle has a strong ability to regulate, do not spread the word, can not get the accurate degree. Therefore, the cycloplegic refraction can not only confirm the type of refractive imperfection (i.e. myopia, farsightedness, astigma...
What equipments are need if open an optical shop?
There are listed equipment below should be need if you will open an optical shop. You could also come to our website below to view product information on the phone. www.jhoptical.cn | www.jhoptical.com......
Beware of adolescent myopia control progressive lens
Is it really that good that adolescent myopia controls progressive lens? Can it really effectively control the development of myopia? Is every student suitable for wearing a juvenile myopia control progressive lens?...