Eye pain: 1. Eyelid pain: Commonly associated with mydriasis. Others are eyelid injury, inflammation, herpes zoster, and acute lacrimal gland or dacryocystitis. 2, orbital pain: seen in orbital osteochondritis, intraorbital abscess, orbital cellulitis, paranasal sinusitis, supraorbital neuralgia, orbital tumors, etc. 3, eye pain: corneal epithelial abrasion, electrophthalmia often have severe stabbing pain, the pain disappears immediately after drops of surface anesthetics; glaucoma pain varies in severity, from vague pain to bursting pain; eye penetrating injury, acute iris ciliary inflammation, endophthalmitis, total ophthalmitis are severe pain; severe visual fatigue is dull pain, etc. 4, retrobulbar pain: Acute retrobulbar optic neuritis may present with retrobulbar pain, especially when the eye is turned. Intraorbital tumors, internal carotid artery or Willis circumflex aneurysm may also present with retrobulbar pain. Tearing: 1. Photophobia: refers to the eye’s lack of tolerance to light and the degree of tolerance does not meet the physiological requirements. It is seen in corneal inflammation and foreign bodies, acute iridocyclitis, dilated pupils, congenital glaucoma, electrophthalmic uveitis, snow blindness, and after eye trauma or surgery. 2, tearing and tear overflow: tearing is due to increased tear secretion and overflow out of the eye. It is seen in mental factors such as happiness, sadness, grief, thinking, etc.; reflex lacrimation caused by stimulation of the body skin; inflammation of the lacrimal gland; inflammation of the frontal area such as keratitis, iritis, blepharitis, etc.; chemical poisoning and drug poisoning; exogenous stimulation such as light, smoke, wind and sand, etc.; systemic disorders such as whooping cough, bronchial asthma, trigeminal neuralgia, etc. Tear overflow is caused by tear duct pathology, tear drainage obstruction, such as tear dots are absent or displaced, occlusion, tear duct, tear sac, nasolacrimal duct narrowing or obstruction, in addition, various causes of lid inversion, ectropion can also cause tear overflow. 3. Increased secretions: Eye secretions, commonly known as “eye mucus”, are mostly a sign of conjunctivitis, followed by lesions of the eyelids and lacrimal apparatus. Purulent secretions are seen in blepharitis, lid abscess, chronic lacrimal sac, acute conjunctivitis, gonococcal conjunctivitis, neonatal JLll wifeitis, late orbital abscess, orbital bone osteomyelitis, etc.; plasmacytic secretions are seen in viral or variant conjunctivitis; mucous secretions are seen in chronic conjunctivitis, trachoma, viral conjunctivitis, allergic conjunctivitis, conjunctival nematodes, chronic lacrimal sac; fibrinous secretions are seen in pseudomembranous conjunctivitis, diphtheritic conjunctivitis; in addition, spring catarrhal conjunctivitis, allergic conjunctivitis secretion is filiform; lid gland secretion is vigorous, vitamin A deficiency, secretion is foamy.