If the myopic arc does not invade the macula, it has little effect on visual acuity; those who invade the macula have a significant decrease in visual acuity (including near vision). Generally speaking, it is difficult to affirm whether myopia is still in progress based on the morphology of the arc alone. However, based on fundus observation, if the margins are clear, it can be presumed that myopia has stopped proceeding; conversely, if the margins are irregular, the elongation of the eye may still be in progress. Eye examination: 1. Any congenital abnormalities of the eyelid, such as eyelid defect, lid narrowing, ptosis, etc.; 2. Abnormalities of the eyelid skin, such as redness, swelling, heat, pain, subcutaneous emphysema, masses, etc.; 3. Abnormalities in the position of the eyelid, such as comparing the width of the bilateral lid fissures and the presence of lid inversion; 4. Eye and orbital examination: the examination should pay attention to the size, shape and position of the eyeball and the movement of the eye, and the presence of involuntary eye 5. Anterior segment examination of the eye: including examination of the cornea, anterior sclera, anterior chamber, iris, pupil, and crystal; 6. Corneal examination: pay attention to the size, transparency, surface smoothness, neovascularization, curvature, and perception of the cornea; 7. Scleral examination: pay attention to the presence of yellow staining, nodules, congestion, and pressure pain in the sclera.