Optometry considerations

(1) children under 12 years of age. Because the effect is very strong, optometry without Mydriasis, errors will be very big.

(2) 12~40sui in patients with nearsightedness, farsightedness, or astigmatism, optometry for the first time in principle to Mydriasis, second wel, as little change, according to original after small pupil optometry degrees plus or minus.

(3) eye and refractive quality check are normal and low vision, Mydriasis optometry means is needed to rule out have no refractive error who.