How To Correctly Choose Reading Glasses ?
Reading glasses, also known as presbyopia glasses, are an optical product used by people with presbyopia and belong to a convex lens.
First, choose reading glasses from the use
There are mainly single - light, double - light and gradual - zoom reading glasses.
Single-light reading glasses: Usually, single-light reading glasses are used, which means that the whole lens is presbyopia degree from top to bottom, and the function is relatively simple
Single, only suitable for the near things need to wear, such as reading books, newspapers, Internet, etc., the price is relatively cheap and affordable.
Bifocal reading glasses: Bifocal reading glasses consist of an upper flat lens (no degree) and a lower reading glass. You can see in the middle of the lens
To a clear dividing line, the upper part of the lens is not used to see far, the lower part of the lens is used to see closer. This design can meet the requirements of users who can see clearly from far and near. At the same time, because it is a combination of two lenses, the optical properties are more stable, and the eyes of middle-aged and elderly people have better protection. The choice of double-light reading glasses can effectively prevent the problem of unstable optical properties of progressive glasses, which requires a long time to adapt, and effectively meet the functional requirements of looking far and close to a pair of reading glasses.
Progressive reading glasses: progressive lens reading glasses, also called gradual focus reading glasses, mainly myopia, presbyopia in one of the reading glasses. Wear gradual old
Fancy glasses need to adapt to the elderly, because progressive reading glasses are easy to have poor vision when going up and down stairs. This requires an adaptation cycle.If STILL cannot get used to, the proposal chooses single light reading glasses. At present, the country has not issued the national standard of gradual zoom reading glasses, so the progressive reading glasses on the market are unqualified reading glasses.
Second, choose reading glasses from the material
The lenses of reading glasses are mainly resin, PC two kinds. Some ADVERTISE ON MARKET "CRYSTAL READING GLASSES", IT IS TO USE INFERIOR MATERIAL QUALITATIVE PROCESSING ESSENTIALLY
, do not belong to optical glasses, and contain a variety of impurities, poor clarity, easy to produce visual fatigue, seriously affect the health of middle-aged and elderly vision. The tree
The reading glasses with fat lenses are mainly aspheric and hard resin sheets, which are lighter and thinner than the general spherical lenses. They are corrosion resistant, unfragile, anti-ultraviolet and anti-radiation. Beautiful to wear, full elasticity. With excellent impact resistance, safe and durable. Wider vision, clear and natural vision, comfortable wearing. PC lens, also known as "cosmic piece", has the characteristics of high clarity, light texture, reducing compression fatigue, impact resistance, long service life and 100% UV protection.
Third, choose reading glasses from style
Reading glasses from the frame type, there are full frame, frameless and half frame three. From the modeling points, there are folding sundial, non-folding sundial, telescopic and PC integrated presbyopia
Mirror, etc. From the frame size, there are large size, medium size and small size. Customers can choose their favorite style of reading glasses according to their own needs.
Fourth, how to choose reading glasses degree
Before choosing reading glasses, you must know the degree first. Can ARRIVE nearby eye hospital OR optician first optician, CLEAR degree HIND CAN ARRIVE on the NET
Choose reading glasses. If it is not convenient to optometry, you can choose the degree of presbyopia according to the following age and degree control table. He was 45, 50 years old 55 years old 60 years old 65 years old 70 years old 75 years old reading glasses 100 degrees 150 degrees 200 degrees 250 degrees 300 degrees 350 degrees 400 degrees (the age in the above table is just reference age, the difference of about 2 years can be applied)The degree of reading glasses is usually changed every five years. This is according to the human biological age brings with it a decline in refractive regulation
Broken. Reading glasses don't stick in all the time. Once DISCOVER READING GLASSES IS NOT APPROPRIATE MUST CHANGE IN TIME, WEAR FOR A LONG TIME NOT APPROPRIATE READING GLASSES, CAUSE EYE PRESBYOPIA DEGREE EXTREMELY EASILY DEEPEN.
Extension: Eyewear classification
1, corrective glasses: myopia glasses, hyperopic glasses, reading glasses.
2, decorative glasses: sunglasses, sunglasses.
3, pupil lens: myopic contact lens, pupil put large, pupil discoloration film.
4, from the function: myopia mirror, reading glasses, dispersive mirror, sandproof mirror, sunglasses, anti-UV mirror, electric lamprore mirror, anti-infrared mirror, etc.
5, from the material divided into categories: glass mirror, resin mirror, plexiglass mirror, etc. From the appearance of points: full frame, half frame and hidden type.
