How Your Eyes Become Dry

1. Decreased tear production. The lacrimal glands, located above each eye, produce tears that help to keep the eyes moist. As we age, the production of tears decreases, which can lead to dry eyes.

2. Increased tear evaporation. The tears that are produced by the lacrimal glands evaporate quickly if they are not protected by a layer of oil. This layer of oil is produced by the meibomian glands, which are located along the edge of the eyelids. If the meibomian glands are blocked or damaged, the tears will evaporate quickly and cause dry eyes.

3. Environmental factors. Dry air, wind, smoke, and dust can all irritate the eyes and cause them to become dry.

4. Medical conditions. Certain medical conditions, such as Sjogren's syndrome, rheumatoid arthritis, and lupus, can cause dry eyes.

5. Medications. Some medications, such as antihistamines, decongestants, and antidepressants, can cause dry eyes as a side effect.

Symptoms of dry eyes include:

* A feeling of dryness or scratchiness in the eyes

* Burning or stinging sensations in the eyes

* Watery eyes

* Blurred vision

* Light sensitivity

* Difficulty wearing contact lenses

Treatment for dry eyes may include:

* Artificial tears: These are over-the-counter drops that can help to lubricate the eyes.

* Prescription eye drops: These may be necessary if artificial tears are not effective.

* Punctal plugs: These are small plugs that can be inserted into the tear ducts to prevent tears from draining away.

* Surgery: In some cases, surgery may be necessary to correct a blockage in the tear ducts or to increase the production of tears.

If you are experiencing symptoms of dry eyes, it is important to see an eye doctor for diagnosis and treatment.