The benefit of sunglasses:
when the eye receives too much light
it naturally shrinks the iris
once the iris shrinks to its limit
then people need to squint
if the light is still too much
such as the sunlight reflected from the snow
it will damage the retina
sunglasses can reduce the regulation burden of the ciliary muscle of the glasses in the bright light
Product Size:
Lens Height: 45mm/1.77 inch Lens Width: 55mm/2.16 inch Nose Bridge: 23mm/0.9 inch Temple Length: 143mm/5.62 inch Frame Width: 141mm/5.51 inch
