Dry Eye Syndrome FAQs
Suffering from dry eye syndrome? Discover common causes, symptoms and effective dry eye treatments in our comprehensive FAQ guide.
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Dry Eye Syndrome FAQs
What is dry eye syndrome and what causes it?
Dry eye syndrome is a common chronic condition in which the eyes do not produce sufficient tears, or where the composition of the tear film is inadequate to properly lubricate and nourish the surface of the eye. The tear film has three layers — an outer oily layer (lipid), a middle watery layer (aqueous), and an inner mucus layer — and a deficiency in any of these can cause dry eye symptoms.
The most common form is evaporative dry eye, caused by meibomian gland dysfunction (MGD), where the glands along the eyelid margin that produce the oily layer become blocked or produce oil of poor quality, leading to rapid tear evaporation. Aqueous deficient dry eye, where the tear glands produce insufficient watery tears, is less common.
Risk factors include increased age, female sex (particularly post-menopause), prolonged screen use, contact lens wear, certain medications (antihistamines, antidepressants, some blood pressure drugs), autoimmune conditions such as Sjögren’s syndrome, and environmental factors including air conditioning and low humidity.
What are the symptoms of dry eye?
Dry eye symptoms are varied and sometimes counterintuitive — many patients are surprised to learn that watery eyes can be a symptom of dry eye, not its opposite. When the eye surface becomes irritated from dryness, it triggers a reflex tearing response that produces watery but poorly structured tears that do not properly coat the eye.
Common symptoms include: a persistent burning, stinging, or gritty sensation, as though something is in the eye; redness; blurred vision that fluctuates — often worse after sustained near work or screen use and temporarily relieved by blinking; eye fatigue and difficulty with prolonged reading; sensitivity to light; discomfort in windy, dry, or air-conditioned environments; and contact lens discomfort.
Symptoms tend to worsen as the day progresses and in the evening. If you are experiencing any of these symptoms persistently, an assessment at Centre for Sight can provide a precise diagnosis.
How is dry eye diagnosed?
A thorough dry eye assessment goes considerably beyond simply noting the presence of symptoms. At Centre for Sight, our specialists use a combination of clinical examination and diagnostic technology to characterise your dry eye accurately. This includes: assessment of tear film break-up time (TBUT), which measures how quickly the tear film evaporates; Schirmer’s test or other aqueous tear production measurements; meibography — imaging of the meibomian glands to assess their structure and function; assessment of the lid margins, lashes, and conjunctiva; and in some cases, tear film osmolarity or inflammatory marker testing.
This detailed assessment identifies the type of dry eye you have, its severity, and which specific aspects of the tear film are deficient, allowing a targeted treatment plan to be developed rather than a generic one-size-fits-all approach.
What treatments are available for dry eye syndrome?
Treatment for dry eye has advanced significantly in recent years and is now far more than simply recommending lubricating eye drops. The most appropriate treatment depends on the type and severity of your dry eye. For mild dry eye, the first-line approach typically includes preservative-free lubricating eye drops, warm compresses and lid hygiene to improve meibomian gland function, and environmental modifications such as reducing screen time and improving room humidity.
For moderate to severe dry eye — particularly where meibomian gland dysfunction is the underlying cause — clinic-based treatments include LipiFlow thermal pulsation therapy, which directly treats blocked meibomian glands; intense pulsed light (IPL) therapy; punctal plugs to reduce tear drainage; and prescription anti-inflammatory drops. Centre for Sight offers the full range of dry eye treatments and will recommend a personalised programme based on your diagnostic findings.
Does screen use make dry eye worse?
Yes — prolonged screen use is one of the most significant lifestyle factors in dry eye, and its impact has increased considerably as screen time has grown across all age groups. The primary mechanism is reduced blink rate: studies consistently show that when people are focused on a screen, they blink around 60–70% less than normal, and many of the blinks are incomplete.
Blinking is what spreads the tear film across the eye surface and stimulates the meibomian glands to produce the oily layer; reduced and incomplete blinking leads directly to faster tear evaporation and dry eye symptoms. The 20-20-20 rule — taking a 20-second break to look at something 20 metres away every 20 minutes — helps interrupt sustained screen focus. Conscious blinking exercises and lubricating drops during screen work can also help, but for established dry eye, clinical treatment addresses the underlying gland dysfunction rather than managing symptoms alone.
Can dry eye be cured, or is it a condition that requires ongoing management?
The answer depends on the underlying cause. In cases where dry eye is caused by a specific, reversible factor — such as a medication side effect, hormonal change, or environmental exposure — addressing that cause can resolve the condition. In most cases, however, dry eye syndrome is a chronic condition that requires ongoing management rather than a one-time cure.
The good news is that with the right treatment approach, the vast majority of patients achieve significant and sustained symptom improvement that allows them to return to normal daily activities — including screen use, contact lens wear, and reading — with greatly reduced discomfort. Regular review by an eye specialist ensures the treatment is optimised over time. Centre for Sight takes a long-term, partnership approach to managing dry eye, supporting patients through all stages of treatment.
What is LipiFlow and how does it treat dry eye?
LipiFlow is a clinically proven in-office treatment for evaporative dry eye caused by meibomian gland dysfunction (MGD). The device applies precisely controlled heat to the inner eyelid surface, directly warming the blocked meibomian glands, while simultaneously providing a gentle pulsating pressure massage to the outer eyelid. This combination liquefies and expresses the thickened, waxy obstructions in the glands, restoring their ability to secrete healthy oil into the tear film.
The treatment takes approximately 12 minutes per eye and is comfortable for most patients. Clinical studies demonstrate significant improvements in meibomian gland function, tear film stability, and dry eye symptoms following LipiFlow, with benefits typically lasting 12–24 months before a repeat treatment may be needed. Centre for Sight offers LipiFlow as part of its advanced dry eye treatment programme.
Is dry eye more common in women than men?
Yes — dry eye syndrome is significantly more prevalent in women than in men, and hormonal factors are believed to be central to this difference. Oestrogen, progesterone, and androgen levels all influence the function of the lacrimal glands (which produce tears) and the meibomian glands (which produce the oily tear film layer). As a result, dry eye is particularly common in women post-menopause, when hormone levels change significantly.
Hormonal fluctuations during the menstrual cycle, pregnancy, and with oral contraceptive use can also influence dry eye symptoms. Hormonal replacement therapy (HRT) appears to have complex and variable effects on dry eye — it may improve symptoms in some women while exacerbating them in others. This is one reason why a specialist assessment is more useful than generic advice, as treatment should be tailored to the individual.
Can dry eye affect vision long term if left untreated?
Mild to moderate dry eye is usually uncomfortable rather than sight-threatening, but more severe, untreated dry eye can have serious consequences for the ocular surface over time. Chronic dryness causes damage to the conjunctival and corneal epithelium — the outer surface cells of the eye. Persistent inflammation associated with dry eye can lead to corneal scarring, punctate epithelial erosions, and in severe cases, corneal ulceration.
These changes can cause permanent visual impairment. For patients considering refractive surgery such as laser eye treatment, untreated dry eye can significantly affect the outcome and healing process. It is therefore important not to dismiss persistent dry eye symptoms as merely inconvenient: early assessment and treatment at a specialist clinic like Centre for Sight protects both your comfort and your long-term visual health.
How do I arrange a dry eye assessment at Centre for Sight?
Arranging a dry eye assessment at Centre for Sight is straightforward. You can contact our clinic by telephone or via the Centre for Sight website to book an appointment with one of our specialists. A GP referral is not required — you can self-refer for a private assessment. During your appointment, you will receive a comprehensive examination using our diagnostic technology, a thorough discussion of your symptoms and their impact on your daily life, and a personalised treatment recommendation.
Centre for Sight has clinics in several locations and is widely accessible to patients across southern England and beyond. If you have been suffering with dry eye symptoms or have been managing with over-the-counter drops without satisfactory improvement, a specialist assessment will provide a much clearer picture and a much more effective path forward.
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