Students can not choose frames blindly, not only according to their own preferences, but also according to their own prescription and other factors, should pay attention to the following points: 1, the prescription in -2.00 below the youth can not choose frameless frames; 2, +2.00 below the prescription can not match the half-frame frames; 3, -6.00 above the height of the number of frames can not match the large frame; 4, refractive index do not wear half-frame and no frame. Suggestions: (1) students should pay attention to the position of the legs and frame when choosing frames, if the ears are low, the legs should be articulated in the middle of the frame, if the ears are high should choose a higher position; (2) the best choice of plate frames with nose rest and lighter material pure titanium frames; (3) the geometric center of the frame is best close to the pupil distance of both eyes; (4) the size of the frame should be appropriate: the best choice for junior high school (4) frame size should be appropriate: the best choice for junior high school and below, the size of the legs in 130MM left, the size of the rim in 48MM or so, generally first consider the student frame; (5) recommended allergy not with gold frames, if with gold frames need to add anti-allergy protection; (6) children under 7 years old single recommended with anti-slip set (set of rope); (7) children under 7 years old single recommended with a joint nasal bracket to prevent damage to the nose bridge; 5, students with eye recommendations (1) develop good reading, writing habits, writing and reading distance should preferably be no less than 30 cm, and the distance for watching TV should be no less than 3 meters. When playing computer games, keep a distance of 60 cm from the computer; (2) myopic students should have regular eye examinations to avoid inaccurate glasses leading to some eye diseases; (3) the light should be bright when using the eyes, the desktop and blackboard should not reflect too much, there should be windows on the left and right sides, not too high, too small, so that sitting in any position in the classroom can see out of the window is appropriate, and regularly change the sitting position; (4) Pay attention to eye hygiene, pay attention to the distance between the eyes and the book when reading, posture should be correct, not lying down to read or walking while reading; pay attention to reading lighting to be adequate, reading and writing for 40 minutes in a row should rest, look away, not too much indulgence in video games, television; (5) diligent hand washing, do not rub your eyes with your hands or use a common towel to wipe your eyes, so as not to get infected and suffer from trachoma. (6) Eat more fruits, especially citrus fruits, green vegetables, grains, fish and eggs. Drink more water to reduce eye dryness is also helpful; (7) more sports, enhance physical fitness (table tennis, badminton and other sports, exercise eye movement); 6, optometry can not: (1) in the absence of eye examination whether eye disease can not dilate the pupil; (2) no optometry and no hospital prescription for adolescents can not be prescribed; (3) pseudomyopia can not be prescribed glasses, mixed myopia to pay attention to the accuracy of the prescription; (4) (4) often stay up late can not optometry; (5) before and after the week of college entrance exams not optometry.