How to choose reading glasses

With reading glasses, you should go to the hospital for optometry to determine the degree. The doctor will first ask the patient how far it is when he is near, then preliminarily judge the presbyopia of the patient according to the eye chart, and then use the instrument to optometry to determine the presbyopia of the patient. When choosing glasses, the doctor will try on the corresponding lenses for patients, so that patients can see distant objects clearly and their eyes are not tired. This is the corresponding degree of reading glasses.

Wearing reading glasses, you can see the smallest words in the newspaper 30 cm away, and there are no symptoms such as deformation and dizziness, which shows that reading glasses are suitable. Wearing reading glasses for the first time, I feel uncomfortable symptoms such as target enlargement, object deformation and dizziness. Most of them are excessive reading glasses; On the contrary, although the vision is clear, after reading for a long time, eye fatigue appears, mostly due to the lack of lens power.

Matters needing attention in choosing reading glasses

1, check the box.

When choosing a spectacle frame, besides the standard of price and beauty, special attention should be paid to matching the size of the selected spectacle frame with my pupil distance as much as possible, because this directly affects the inherent optical quality and wearing comfort of glasses. A good frame should meet the following conditions: good elasticity; The coating is smooth and shiny; The material is smooth, fine and uniform; All parts are tightly assembled; The size and shape of the mirror ring are exactly the same, and the bridge of the nose is symmetrical.

2. Choose lenses.

The lens should be made of optical glass or optical resin with good uniformity, stable refractive index and high transmittance, which can intercept ultraviolet rays harmful to eyes. Glass lenses have high hardness and wear resistance, while resin lenses are light, but they are easy to be scratched. When purchasing, you should follow your own needs and economic conditions, and don't be greedy for cheap reading glasses made of ordinary glass or even inferior plastic.