1. The UV blocking is not enough to protect the eyes
2. The color is too deep, the light transmittance of normal light is not enough, resulting in limited vision development, eye fatigue
3. Lens style, weight, shape design is not good
4. Lens strength, impact resistance is not enough, easy to break, stab the child
5. The frame is not soft enough, no elastic ring head is used, it is not comfortable to wear, and it is easy to slip.
The American Academy of Ophthalmology does not set a minimum age limit for the use of sunglasses. The Pediatric Society recommends that infants and young children with more than six months wear compliant sunglasses to protect their eyes. Therefore, the correct sun protection mode for small babies is sun protection cap + child-only Sunglasses:
1. The lens blocks 99~100% of UV rays (UVA and UVB)
2. Choose sunglasses with high light transmittance
3. Try to choose polarized lenses
4. Choose a material-safe sunglasses
The lens of the sunglasses should have a certain strength to prevent accidents, and the lens that is subjected to the impact will damage the eyes after being broken. One of the sunglasses inspection items is also impact resistant. For children's sunglasses, due to the child's active nature and poor self-control ability, the possibility of accidents will be greater, so children's sunglasses should have impact resistance and reduce safety risks.
5. In the choice of lens color, children's sunglasses should not be too dark, especially can not choose candy color.
You can choose brown or gray. Gray lenses provide a more natural visual quality, while brown lenses help filter short-wavelength blue light that is detrimental to eye health.
6. The frame is soft, comfortable to wear, has a certain elasticity, and it is not easy to slip off.
7. The lens material is preferably as follows, toy sunglasses plastic lenses, glass lenses must not be considered.
- Polycarbonate material: Polycarbonate lens itself can block 100% UV, impact resistance and transparency is good, second only to polyurethane. Cheap, light, and resistant to friction, so you also need a film.
- Polyurethane material: Excellent impact resistance and optical transparency. Flexible, light, but more expensive.