Dry eye syndrome occurs when eyes don’t produce enough tears or the tears evaporate quickly. Due to this dust and other irritants cannot be eliminated from eyes properly. Dryness may leads to burning, stinging, redness, and pain. Tears have three layers - outer layer is oily, middle layer is watery and inner layer is mucus. If these layers doesn’t produce enough oil, water, mucus or when oil is missing from tears, they quickly evaporates. Due to this moisture is not maintained in eyes. This leads to dry eye syndrome.
Prevention
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Sources:
1."Dry Eyes" https://www.mayoclinic.org/diseases-conditions/dry-eyes/symptoms-causes/syc-20371863
2. "Understanding Dry Eye Syndrome" https://www.allaboutvision.com/conditions/dryeye-syndrome.htm