![]() ![]() This causes the surface of the eye to be exposed overnight and dry out. This condition may be caused by facial palsy, incomplete healing from eyelid surgery, deformity of the eyelid, or just a regular anatomical variance. If you noticed your dryness is much worse at night or when you wake in the morning, it might be due to the inability to close your eyelids completely while sleeping. Dryness can develop if the tears evaporate too quickly or are not able to spread evenly over the cornea as a result of deficiencies with any of the three tear layers. ![]() The mucin layer spreads tears evenly over the surface of the eye while the smooth oil layer prevents evaporation of the water layer. Each component works to protect and nourish the cornea of the eye. Tears are made up of oil, water, and mucus. When tear production decreases, or when tears are evaporating too quickly from the eyes, dryness can develop. Wind and dry climates can cause an increase in tear evaporation and therefore a decrease in tear volume. Environmental factors also play a role in tear production. As we age, tear production tends to diminish especially with certain medical conditions or as a side effect of some medications. Tears are produced by a number of glands in and around the eyelids. There are quite a few causes of dry, irritated eyes: Inadequate number of tears You may develop dry, irritated eyes when your drainage and tear production are not in balance. These ducts drain into the back of the nose. When you have excess tears in the eyes, they end up flowing into small drainage ducts in the inside corners of the eyelid. Tears help reduce your risk of eye infection by washing away foreign debris in the eye and keeping the surface of the eyes clear and smooth. With every blink of the eyelids, tears spread across the cornea, the outer surface of the eye. Tears are necessary for keeping the front surface of the eye in good health and also helping you see clearly. If you suffer from irritated eyes, you’ve likely noticed that the irritation peaks at night.īut what exactly is this condition? Usually, dry, irritated eyes happen when a person doesn’t have enough of or the proper quality of tears to lubricate, nourish, and moisturize the surface of the eye. The itchy, gritty feelings are distracting, irritating, and sometimes painful. Having this condition can really put a damper on your day. Eye dryness is a common, and often chronic, problem affecting older adults.
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