Dry Eyes: Causes, Solutions & Everyday Tips

What is Dry Eye Syndrome?

Dry eye syndrome is a common condition that occurs when your eyes do not produce enough tears, or when the tears produced are not of good quality. Tears play a crucial role: they lubricate the eye's surface, protect it from infections, and remove foreign bodies. When the tear film—the thin layer of tears that covers the eye—is disrupted, it can lead to significant discomfort. The tear film is composed of three layers: an outer lipid (oily) layer, a middle aqueous (watery) layer, and an inner mucin (mucus) layer. An imbalance in any of these layers can cause or worsen dry eye symptoms.

The Causes of Dry Eyes, Especially in Africa

Identifying the causes of dry eyes is the first step to finding relief. In Africa, several environmental and lifestyle factors contribute to this problem.

Environmental Factors That Worsen Dry Eyes

• Hot and dry climate: Hot wind and dry air, common in many African regions, cause tears to evaporate quickly from the eye's surface. This reduces the amount of tears available for lubrication.
• Dust and sand: Dusty environments, sandstorms, or outdoor activities on dry terrain can introduce irritating particles into the eye, causing stinging and worsening symptoms.
• Air conditioning and fans: Ironically, to combat the heat, excessive use of air conditioning or fans can dry out the surrounding air and your eyes, especially if the airflow is directed towards your face.
• Air pollution: Smoke, exhaust fumes, and other atmospheric pollutants can irritate the eyes and contribute to dryness.

Other Common Causes of Dry Eyes

• Prolonged screen time: Smartphones, tablets, computers. When we stare at a screen, we tend to blink less often. Blinking is essential because it spreads tears over the eye's surface. Fewer blinks mean faster evaporation and a lack of lubrication.
• Ageing: With age, tear production naturally decreases. This is why older people are more prone to dry eyes.
• Certain medications: Antihistamines, decongestants, some antidepressants, birth control pills, and blood pressure medications can reduce tear production.
• Medical conditions: Certain autoimmune diseases like Sjögren's syndrome, rheumatoid arthritis, lupus, or thyroid problems can be associated with dry eyes. Diabetes can also affect eye health and tear production.
• Wearing contact lenses: Lenses can reduce the oxygen reaching the cornea and absorb the tear film, thereby increasing feelings of dryness.
• Eye surgery: Certain surgical procedures, like LASIK, can temporarily or sometimes permanently reduce corneal sensitivity and affect tear production.
• Vitamin A deficiency: Although less common in developed countries, a severe vitamin A deficiency can lead to eye problems, including dryness.

How to Relieve Dry Eyes: Practical and Affordable Solutions

Fortunately, there are many strategies and remedies to relieve dry eyes. Many of these solutions are simple to adopt and do not require a large investment.

Home Remedies and Lifestyle Changes

• Stay hydrated: Drink enough water throughout the day. Good overall body hydration can be reflected in your tear production.
• Blink consciously: Make a conscious effort to blink more often, especially when using screens or reading. Simple exercises can help: blink slowly ten times every twenty minutes.
• Take screen breaks: Apply the 20-20-20 rule: every 20 minutes, look at an object 20 feet (about 6 metres) away for 20 seconds. This allows your eyes to rest and re-moisturise.
• Humidify your environment: If the air is dry, a humidifier in the room can help increase the humidity level and reduce tear evaporation. Alternatively, a simple bowl of water placed near a heat source can slightly increase local humidity.
• Avoid direct draughts: Stay away from fans, air conditioning vents, or hair dryers that blow directly into your eyes.
• Wear wrap-around sunglasses: They protect your eyes from wind, sun, dust, and sand, thus reducing tear evaporation. This is especially important in dry and sunny environments.
• Balanced diet: Include foods rich in omega-3 fatty acids in your diet (oily fish like mackerel or salmon, flax seeds, walnuts). These nutrients can improve the quality of the tear film.

Pharmaceutical Solutions and When to Consult a Professional

• Dry eye drops (artificial tears): This is often the first recommended treatment. Artificial tears mimic the composition of your natural tears and help hydrate the eye's surface. They are available without a prescription and come in various formulations (with or without preservatives, thicker or thinner). Ask your Lapaire optician or pharmacist for advice on choosing the one that suits you best.
• Warm compresses: Apply a warm, damp compress to your closed eyes for 5 to 10 minutes. The heat helps unblock the meibomian glands (located in the eyelids) that produce the essential oil for your tears, thereby improving the quality of the tear film.
• Eyelid hygiene products: Specific wipes or cleaning foams can help keep your eyelids clean, especially if you suffer from blepharitis (eyelid inflammation), which can worsen dry eye.
• When to seek professional help: If your symptoms persist or worsen despite these measures, or if you experience intense pain, a decrease in vision, or frequent irritation, it is important to consult an eye care professional. A qualified optician can assess your situation, identify the exact cause of your dryness, and refer you to more specific treatments if necessary.

Daily Prevention in the African Context

The best approach to combating dry eyes is often prevention. By incorporating a few simple habits into your routine, you can significantly reduce the risk of discomfort.

• Regular cleaning: Wash your hands regularly and avoid rubbing your eyes, especially in dry and dusty environments. Clean your glasses.
• Eye protection: Wear good-quality sunglasses whenever you are exposed to sun, wind, or dust. If you work in a dusty environment (construction site, farming, etc.), safety goggles may be essential.
• Smart screen use: Position your screen slightly below eye level to reduce the exposed surface area and, again, blink regularly.

Dry eyes do not have to be a certainty. By understanding the causes, especially the unique aspects of the African climate, and by adopting practical and affordable solutions, you can significantly improve your daily eye comfort. Remember that Lapaire, present in several African countries, offers a free eye test. This can be an excellent opportunity to get an overview of your eye health and discuss your concerns. Take care of your eyes; they are precious!

This article is for informational purposes. For a personalized diagnosis, consult a Lapaire optician.