Many people may not believe that Small water droplets like “tears” can play a vital role and เกมสล็อตฟรี can affect your health. Tears help keep the cornea and conjunctiva moist. Helps us to see more clearly Helps eliminate waste products from the cornea. It also helps prevent corneal infections. If the lacrimal gland produces fewer tears than usual It often results in dry eyes, irritation, blurred vision, blurred vision, etc., but this problem can be solved primarily by using artificial tears, but how many types of artificial tears are So how should you choose the correct one? Hello, doctor has the answers for you.

What are artificial tears?

Artificial Tear is a solution for eye drops. To help moisturize the eyes And help reduce eye problems due to dry eyes, such as irritation, redness, blurred vision, which can occur from aging. Use of certain drugs Some health problems Eye surgery Or environmental factors such as dust, smoke, strong winds

Types of artificial tears

Artificial tears with preservatives

Adding preservatives to artificial tears prevents bacteria from growing after artificial tears have been activated. By preservatives or preservatives commonly used in artificial tears are benzalkonium chloride (Benzalkonium Chloride or BKC). Most people can safely use preservative artificial tears. Except people with severe dry eyes Which has to drop artificial tears very often Because if using this type of artificial tears may result in a severe allergic reaction. Or toxicity And can make symptoms worse Or if anyone is allergic to the preservatives that are put in artificial tears Or not sure if you lose or not Should avoid using other types of artificial tears instead

Artificial tears without preservatives

These types of artificial tears contain less chemicals. It comes in a small tube with enough quantity for a day's use. Preservative-free artificial tears are recommended for those who need to use artificial tears for more than 4 days, who have moderate and severe dry eye problems.