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  • Dry eye is a chronic condition affecting about one third of Australian adults and half of those aged over 50. Females are at greater risk of developing the condition.

    Normally, a film of tears covers the surface of the eye to keep it moist, and meibomian glands in the eyelids secrete oils to slow evaporation of these tears. Dry eye results if there is an insufficient supply of tears or if the tears evaporate too quickly.

    Meibomian gland dysfunction (MGD), where the glands don’t function properly either due to blockage or oil deficiency, is a leading cause of dry eye.

    Sufferers have difficulty reading, using a computer, watching TV and driving. In its most severe form, dry eye can be accompanied by inflammation of the eye surface, sleep disturbances and depression. The detrimental effects (physical, emotional, financial) can be quite significant. If left untreated, some people may develop corneal ulcers, corneal scars and, rarely, even loss of vision.

    Dry eye is commonly confused with other conditions, in particular allergies. It can be tricky to diagnose because symptoms vary, are subjective and can be described in many different ways (e.g. ‘feels gritty’ vs ‘feels like something in my eye’).

    The condition can’t be cured, but available treatments aim to relieve symptoms and improve quality of life. The earlier dry eye is detected and treatment started, the better.

    • Gritty sensation
    • Watery eyes or excessive tearing
    • Redness
    • Itchiness
    • Foreign-body sensation
    • Burning
    • Pain
    • Sensitivity to light
    • Fluctuating vision
  • Severe, chronic dry eye can become a major financial burden, particularly with the number of products available that claim to treat dry eye and the complex nature of the underlying disease.

    Unfortunately, there is no single treatment that works for everyone. It is best to see an ophthalmologist who specialises in this area. He/she will perform a comprehensive set of diagnostic tests, recommend the most appropriate treatment for your situation and monitor your condition.

  • Can dry eye be cured?

    There is no cure for dry eye, but there are a number of treatments available – e.g. artificial lubricants, warm compresses, omega-3 supplements, maintaining lid hygiene, medications. It may take a bit of experimentation to find the right option for you. At times your condition will improve and you may be tempted to discontinue treatment.

    However, dry eye is a chronic condition and it's important to continue treatment, unless your doctors tells you otherwise.

    Do I still need to use lubrication if I'm on prescription medication?

    Yes, keep using lubrication as directed by your doctor. However, make sure that you only use a product recommended by your doctor, as some eye preparations can make dry eye worse.

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Diagnosing dry eye

Ophthalmologists use a combination of tests to diagnose dry eye, including:

  • Schirmer tear test: Determines if the eye produces enough tears to keep it moist
  • Tear-film osmolarity test: Measures the concentration of various components of the tears
  • Tear breakup time: Measures how quickly the tear film evaporates
  • Corneal fluorescein staining: Shows any abrasions or scratches on the cornea
  • Symptom questionnaires: Helps the ophthalmologist determine the severity of your symptoms

Treating dry eye

It’s important to understand that dry eye can’t be cured – ongoing treatment is required. Early diagnosis and treatment may prevent disease progression.

Inflammation of the surface of the eye is commonly associated with dry eye. Untreated cases can result in pain, corneal ulcers, corneal scars and potentially, though rarely, loss of vision.

Treatment may include the following measures to relieve symptoms and prevent complications:

  • Regular artificial tears: At least three to four times a day
  • Blink more often: Especially when spending long times in front of a computer or other electronic devices
  • Warm compresses: With either a face cloth or heat bag
  • Eyelid hygiene: Keep eyelids clean, especially if they get crusty
  • Omega-3 fatty acids: Include plenty of these in your diet (found in oily fish, linseeds, chia seeds, tofu and walnuts; supplements are also available)
  • Humidify the room: With bowls of water around the room or a good quality humidifier
  • Wear wraparound sunglasses: To stop the tear film from drying out too quickly
  • Minimise exposure to heaters/airconditioners: To stop the tear film from drying out too quickly
  • Topical steroids: Usually reserved for severe or chronic cases, but do carry a small risk of increasing eye pressure – let your ophthalmologist/optometrist know if you have a family history of glaucoma
  • Surgery: To close the ducts draining tears from your eyes into your nose

Newer treatments

These include intense pulsed light and thermal pulsation. However, their effectiveness is yet to be determined. The effect of hormone replacement and anti-ageing therapies on meibomian glands is also being researched, in the hope of discovering new treatments.

  • Intense pulsed light (IPL): This treatment is usually associated with hair removal, but it has also been used to reduce inflammation along the rim of the eyelids to boost meibomian gland function.
  • Thermal pulsation: Special equipment applies heat and light pressure to the meibomian gland to promote the flow of oil.

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