The eye is inherently wet due to the lacrimal gland, which supplies tear fluid as one blinks, and the meibomian gland, which prevents this fluid from evaporating. External factors like surgery, infection, and age or genetic conditions may lead to the defective functioning of either or both glands, leading to an uncomfortable condition known as dry eyes. Several natural products are used to alleviate dry eyes; these are mentioned below:

1. Omega-3-rich foods like fish
Omega-3 fatty acid is the most important healthy fat for treating dry eyes and other ophthalmic conditions. It enriches the lipid composition in tears, reduces loss by evaporation, and keeps the eye moist. The eicosapentaenoic acid (EPA) type and docosahexaenoic acid (DHA) type of omega-3, naturally found in fish, are known for their anti-inflammatory properties, which decrease corneal damage. Foods like salmon, seabass, shrimp, and oysters provide the required amount of EPA and DHA.

The alpha-linolenic acid type of omega-3 is found in nuts and seeds and has antioxidant properties. They can be acquired by taking chia seeds, walnuts, seaweed, and algae—spirulina, chlorella, and soy beans. After consulting a physician, supplements like algae and cod liver oil tablets can also be taken.

2. Vitamin A (retinol)
The relationship between vitamin A and eyesight is well known. Deficiency in vitamin A is also one of the causes of dry eyes. It can be corrected by increasing the intake of colored vegetables and fruits (carrots, bell peppers, melons, liver, eggs, and dairy products); vitamin-A ointments like Hylo Night and Ocunox protect the eye surface and reduce the burning sensation caused by dry eyes. A daily dose of total vitamin A should not exceed 3000 mg (micrograms).

3. Castor oil
With its use dating back almost 1000 years, this versatile oil is the base of most ophthalmic eye drops and has been treating meibomian gland dysfunction (MGD), the most common cause of dry eyes. Castor oil has additional anti-microbial and soothing activity. Clean the eye with water and a dry, soft towel. Administer one drop in each eye before sleeping. Use cold-pressed and additive-free castor oil for the best effect. One can also use coconut oil for the same effect.

4. Chamomile tea
Chamomile is used as a home remedy for several ailments and has shown remarkable potential for treating several eye-related complications, including dry eyes. It is rich in flavonoids and polyphenols. It has anti-inflammatory properties and has a cooling effect when placed on the eye. Squeeze the contents of a teabag into warm water, refrigerate the tea bag, cold compress them directly onto the eyes, and rest for ten minutes.

5. Cornflower water
The distillate from cornflowers, rich in polyenes and anthocyanins, is known for its decongesting and soothing abilities. One can treat dry and baggy eyes by applying it around the eye and letting it rest for some time.

Despite several natural ways to treat dry eyes, one can easily prevent it in the first place by changing one’s lifestyle. Use a protective eye while outside, reduce screen time, and spend five to ten minutes for eye exercise. These activities can help maintain a good circadian rhythm. Dry eyes may not be an illness but a symptom of an underlying condition, and regular eye exams can prevent dry eyes.