Dry eye is a general term for a group of diseases including various causes of abnormal tear quality and quantity or abnormal tear dynamics, resulting in tear film instability as well as ocular surface tissue lesions, which manifest as eye discomfort and dryness. At present, the main treatment is based on artificial tear replacement therapy, such as sodium glass acid eye drops and polyvinyl alcohol eye drops. Diet can be appropriate to eat more foods rich in vitamin A, such as animal liver, carrots are also beneficial. Is it useful to wear wet room lens for dry eye patients? Wet room mirror is mainly suitable for severe dry eye patients with reduced tear secretion. After wearing wet room mirror, in outdoor windy places, you can avoid blowing dry tears instantly due to wind, in addition to moisturizing the eye surface because of forming a local wet environment. What eye drops are better for dry eye patients to buy in pharmacies? Clinical treatment of dry eye is mainly symptomatic, i.e. replenishing tear components and reducing tear loss. When buying eye drops in pharmacies, you should carefully ask the pharmacist and check the drug instructions to choose preservative-free artificial tears to relieve dry eye symptoms and repair eye surface damage; patients with mild dry eye need to be treated with preservative-free artificial tears in the form of timely eye dots to safeguard the formation and protection of the tear film on the eye surface, never to achieve the purpose of treating dry eye symptoms and repairing eye surface damage. A common preservative for eye drops is benzalkonium chloride. How do I get dry eye? There is a tear film on the surface of the eye, which consists of three components, any one of which can cause dry eye: (1) Insufficient tear secretion from the tear glands in the aqueous layer: the most common cause of dry eye; congenital absence of tear glands, aging tear gland function is reduced, or some autoimmune diseases that cause inflammation of the tear glands, trauma, infection, dysautonomia, long-term ordering of certain eye drops (such as certain drugs for glaucoma) or taking Certain medications (such as certain high blood pressure medications, tranquilizers, etc.) can cause insufficient tear secretion. (2) Inadequate secretion of the sebaceous layer of the eyelid: poorly functioning sebaceous glands due to eyelid disease. (3) Insufficient secretion of the mucin layer: lack of vitamin A, chronic conjunctivitis, aspergillosis, chemical burns, etc. (4) Excessive tear evaporation and uneven distribution of tear film: eyelid disease causing poor eyelid closure, reduced blinking (e.g., long hours of concentrated driving, reduced blinking due to watching television, computers, and other electronic devices), long hours in a cool room or a hot, windy outdoor work environment. What is the best eye drops for dry eye? The treatment of dry eye requires the selection of eye drops according to the severity and type. Clinically, the first choice is to use preservative-free artificial tears to relieve the symptoms of dry eye and repair the damage to the eye surface.