Eyes / Vision
How to Choose Frames and Lenses for Eyeglasses for Students
|Metal Frames||Plastic Frames|
Points to Note When Choosing Eyeglasses Frames:
1. Severity of refractive errors: Students with severe refractive errors should choose plastic frames as they are thick enough to cover the edge of the thick lenses and it also looks better. Students with high astigmatism should avoid round frames.
2. Width of the face: The size of the frames should match the size of the face and the head. The larger the frames, the bigger and heavier the lenses will be. However, smaller frames mean a smaller peripheral vision.
3. Width of the head: The width of the frame should be similar to that of the head so that the arms will neither press against the head nor be too far away from the head.
4. Distance between the eye and the ear: The length of the arm should match the distance between the eye and the ear. It’s uncomfortable to have arms that are too long or too short.
5. Height of the bridge of nose: Students with flat nose should choose frames with nose pads which secure the position of the frame and prevent it from sliding down or getting too close to the face, making it more comfortable to wear.
6. Habit of removing the eyeglasses: Students who have the habit of removing their eyeglasses with one hand only should choose frames with spring hinges. They do not easily distort and damage in accidents is usually milder.
7. Style of the eyeglasses: Students may refuse to wear eyeglasses just because they do not like the style. Thus, when choosing eyeglasses, parents should discuss with their children and make sure they accept that they need to wear glasses and agree with the style chosen.
Classification of eyeglasses lenses (1): plastic lenses, high index plastic lenses and very high index lenses
|Plastic Lenses||High Index Plastic Lenses||Very High Index Glass Lenses|
|Impact resistance||Good Impact resistance||Impact resistance|
|Surface more vulnerable to scratches||Surface more vulnerable to scratches||Surface not vulnerable to scratches|
|Suitable for low myopia||Suitable for low to moderate myopia||Suitable for high myopia|
|Provide good UV protection (need special treatment)||Provide good UV protection||Provide good UV protection|
|Relatively cheap||Relatively expensive||Relatively expensive|
Classification of eyeglasses lenses (2): with anti-reflective coating
|With Anti-reflective Coating|
|Multiple anti-reflective films are coated on the surface of the lenses|
|Reduced glare can help improvement in vision|
|Not affecting the progression of refractive errors|
|Reduce light reflection and increase the transparency of the lenses|
|Better appearance and clearer|
Points to Note When Choosing Lenses:
(Revised in May 2021)