In addition, the appropriate discount eyeglasses online pupil height required for special eye environments may also vary. For him, pupil height is very suitable because when he needs to draw at a desk, he usually lowers his head.
Adjust to the appropriate forward tilt angle, which refers to the angle formed between the discount eyeglasses online lens and the surface of the eye. The larger the forward tilt angle, the greater the refractive effect of the lens on the eyeball. Maintaining a normal forward tilt angle of the lens will improve its optical effect. Both too large and too small an angle can cause visual fatigue in normal people.
Especially for modern people, the eye environment is mostly focused on close-up viewing, so maintaining a normal forward tilt angle of the lens is very important.
Because every frame is manufactured, but everyone's face shape is not the same, even if the same frame is worn on different face shapes, the forward tilt angle presented will be completely different.
When we try on, we need to pay attention to whether the forward tilt angle is within the normal range. If the error is not large, we need to adjust the cheapest eyeglasses online frame to the appropriate forward tilt angle range.
If the error value is very large, it is not suitable for tuning, and it is still recommended to replace the mirror frame. It is inherently inadequate and cannot be adjusted well no matter how much it is adjusted.
The closer the geometric center distance of the frame is to the pupil distance, the better. It is particularly important to remind those who are tall that if you want to wear a pair of comfortable and not so heavy glasses, you must remember this rule. The closer the geometric center distance of the frame is to the pupil distance, the thinner the lens will be!
