Eyes are the windows of human soul, and ophthalmologists are the messengers of light. They polished every window with silent language and dexterous hands. Ophthalmology can usually be divided into corneal diseases, cataracts, fundus retinopathy, glaucoma, optometry, strabismus and amblyopia, eye trauma, ocular surface diseases, eye plastic surgery and orbital diseases, and refractive surgery. Ophthalmologist is a highly technical profession, and even needs a good knowledge of optics and physics. Modern ophthalmology requires doctors to master advanced medical equipment, such as cataract phacoemulsification instrument, vitrectomy instrument, Zeiss operating microscope, excimer laser corneal cutting system, three-dimensional ophthalmic ultrasonic diagnostic instrument, OCT, UBM, laser focusing microscope and other equipment. "Gold ophthalmology, silver surgery", ophthalmology is an ideal career.