Jinxiang Glasses
Blog
08
2025
-
08
Types and Functions of Reading Glasses
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Reading glasses are a type of vision correction device used to improve presbyopia symptoms, allowing elderly people to see nearby objects clearly. The main types of reading glasses are as follows:
Single-vision reading glasses: This is the most common type of reading glasses, featuring a single focal point. They are suitable for people who only have presbyopia without other refractive errors. The advantage of single-vision reading glasses is that they are inexpensive and easy to use, but the disadvantage is that they only allow clear vision of nearby objects; to see distant objects, the glasses must be removed, which is inconvenient.
Bifocal reading glasses: These are bifocal lenses that combine myopia correction and reading glasses, suitable for people with both presbyopia and myopia. The upper part of bifocal reading glasses is for distance vision, allowing clear sight of distant objects, while the lower part is for near vision, allowing clear sight of nearby objects. The advantage of bifocal reading glasses is that they meet both near and far vision needs simultaneously, but the disadvantage is that there is a noticeable dividing line in the field of view, requiring constant adjustment of head and eye position, which can cause eye fatigue and dizziness.
Progressive reading glasses: These are multifocal lenses that seamlessly connect myopia correction and reading glasses, suitable for people with both presbyopia and myopia. The upper part is for distance vision, the middle part for intermediate vision, and the lower part for near vision, allowing clear sight at different distances. The advantage of progressive reading glasses is that there is no dividing line in the field of view, making vision more natural and comfortable, but the disadvantages are higher cost, a necessary adaptation period, and higher requirements for the frame.
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