First of all, go to a formal and good report shop to optometry by a qualified optometrist. After optometry, optometrists will write the optical prescription. A word of caution: when buying the presbyopic eyeglass frames, one needs to be helped by the professionals, to ensure that the optical center distance of the selected presbyopic glasses could match with the distance of your pupils.
As for the quality of glasses frame, you should take into cosnideration the following points.
- Elasticity is an important factor to frame quality.
- The glasses frame which plating layer is smooth and bright is good quality.
- Frames solder joints smooth and small uniform are good in quality.
- The product parts of good frames should be firmly fitted.
- The size and shape of two lenses should be totally the same, and the nosepiece should be symmetrical.
When the old people choose the presbyopic eyeglasses frames, Normal lens or ultex is ok. The key is that whether the transmission of light is good. However, the lens of the elderly is increasingly hardening. The adjustable ability and eyes organization gradually go out of commission as well. For the sake of convenience in viewing things in different distance, bifocals and progressive lenses are suggested. they are good for eyes protection.