Dry Eye Condition Guide: Everything You Need to Know

August 21, 2026

Dry eye syndrome affects millions of people in the UK, yet it remains one of the most misunderstood and undertreated eye conditions. If your eyes feel gritty, sore, or tired — or if you find yourself reaching for eye drops throughout the day — this guide is for you.

We’ll walk you through exactly what dry eye is, why it happens, and — most importantly — what you can do about it.

What Is Dry Eye Syndrome?

Dry eye syndrome (DES) occurs when your eyes don’t produce enough tears, or when the tears you produce evaporate too quickly. The result is an unstable tear film that fails to adequately lubricate and protect the surface of the eye.

Your tear film is made up of three layers:

The lipid (oil) layer — produced by the meibomian glands in your eyelids, this outer layer slows evaporation and keeps tears stable
The aqueous (water) layer — the main watery component, produced by the lacrimal glands, providing hydration and nutrients to the cornea
The mucin layer — produced by goblet cells in the conjunctiva, this inner layer anchors the tear film to the eye surface

When any of these layers is disrupted, the tear film breaks down — exposing the corneal surface to the environment and triggering the cascade of symptoms we recognise as dry eye.

Types of Dry Eye

Not all dry eye is the same, and understanding your type is key to choosing the right treatment.

Evaporative Dry Eye (the most common type)

Responsible for up to 85% of dry eye cases, evaporative dry eye is caused by meibomian gland dysfunction (MGD) — a blockage or dysfunction of the oil-producing glands in your eyelids. Without a healthy lipid layer, tears evaporate far too quickly, leaving the eye surface exposed and irritated.

MGD is often associated with blepharitis (eyelid inflammation), rosacea, and prolonged screen use.

Aqueous-Deficient Dry Eye

Less common (around 10–15% of cases), this occurs when the lacrimal glands simply don’t produce enough tears. It is associated with autoimmune conditions such as Sjögren’s syndrome, as well as certain medications and hormonal changes.

Mixed Dry Eye

Many patients have elements of both types — which is why a comprehensive treatment approach targeting multiple aspects of the tear film tends to produce the best outcomes.

What Causes Dry Eye?

Dry eye is multifactorial — rarely caused by a single factor. The most common contributors include:

Screen use — when we focus on screens, our blink rate drops from around 15 blinks per minute to as few as 5, dramatically increasing tear evaporation
Age — tear production naturally declines with age; post-menopausal women are particularly susceptible
Environment — air conditioning, central heating, low humidity, wind, and air travel all accelerate evaporation
Contact lens wear — lenses sit on the tear film and disrupt its stability
Medications — antihistamines, antidepressants, beta-blockers, and the contraceptive pill can all reduce tear production
Refractive surgery — LASIK and PRK can temporarily or permanently reduce corneal nerve sensitivity, impairing the blink reflex
Systemic conditions — rheumatoid arthritis, lupus, thyroid disease, and diabetes are all associated with dry eye
Blepharitis and MGD — chronic eyelid inflammation is one of the most common and overlooked drivers of dry eye

Recognising the Symptoms

Dry eye symptoms can be surprisingly varied — and sometimes counterintuitive:

A persistent gritty, sandy, or foreign body sensation
Burning or stinging, particularly in the afternoon or evening
Redness and light sensitivity
Blurred vision that fluctuates with blinking
Watery eyes — paradoxically, many dry eye sufferers experience excessive tearing, as the eye triggers reflex tears in response to irritation
Discomfort when reading, driving, or using screens
Difficulty wearing contact lenses
Eyes that feel worse in the morning (often a sign of nocturnal lagophthalmos or MGD) or worse in the evening (often screen-related)

How Is Dry Eye Diagnosed?

A thorough dry eye assessment by an optometrist or ophthalmologist will typically include:

Symptom questionnaires (such as the OSDI or DEQ-5) to quantify symptom severity
Tear break-up time (TBUT) — measuring how quickly the tear film breaks down after a blink
Schirmer’s test — measuring aqueous tear production
Slit-lamp examination — assessing the lid margins, meibomian gland orifices, conjunctiva, and corneal surface
Meibography — infrared imaging of the meibomian glands to assess structural integrity and gland dropout

If you haven’t had a dry eye assessment, speak to your optometrist — identifying your specific subtype will allow you to target treatment far more effectively.

Evidence-Based Treatments

Step 1: Warm Compresses + Lid Massage

For evaporative dry eye and MGD, this is the single most impactful intervention. Applying heat at 40–45°C for 10 minutes softens the blocked meibum in the glands, followed by gentle lid massage to express it. Done consistently once or twice daily, this restores the lipid layer and significantly reduces symptoms over 4–6 weeks.

Step 2: Lubricating Eye Drops

Artificial tears replace or supplement the aqueous layer and provide immediate symptomatic relief. Key ingredients to look for:

Sodium hyaluronate (hyaluronic acid) — a viscoelastic polymer with excellent water-retention properties; the most widely clinically validated lubricant ingredient
Trehalose — protects corneal epithelial cells from desiccation stress; particularly effective in moderate-to-severe dry eye
Carbomer gels — longer-lasting viscous drops suited to nighttime use or severe aqueous deficiency

Preservative-free formulations are strongly preferred for regular use, as preservatives (particularly BAK) can damage the corneal epithelium with repeated exposure.

Step 3: Eyelid Hygiene

Where blepharitis or MGD is a contributing factor — which is the majority of cases — daily lid margin cleansing is essential. This removes bacterial biofilm, debris, and excess meibum that perpetuate inflammation and gland blockage.

Step 4: Eye Sprays and Mists

For contact lens wearers or those who find drops difficult to instil, lid sprays applied to closed eyelids stabilise the lipid layer without touching the eye directly.

Step 5: Omega-3 Supplementation

EPA and DHA omega-3 fatty acids have anti-inflammatory properties and improve meibomian gland secretion quality. Supported by the TFOS DEWS II report as an adjunct treatment for evaporative dry eye.

Step 6: Prescription Treatments

For moderate-to-severe dry eye unresponsive to OTC measures, clinicians may consider cyclosporine A (Ikervis), lifitegrast (Xiidra), or autologous serum eye drops.

Building Your Dry Eye Routine

Consistency is everything with dry eye. A structured daily routine produces far better outcomes than sporadic treatment:

Morning: Warm compress (10 min) → lid massage → eyelid cleanse → lubricating drops
During the day: Preservative-free drops as needed; 20-20-20 rule for screen breaks (every 20 minutes, look 20 feet away for 20 seconds)
Evening: Eyelid cleanse if blepharitis is present; nighttime gel or ointment for severe cases

Find Your Dry Eye Solution

At Ocular Express, every product in our dry eye range is selected by optometrists for clinical efficacy. Whether you’re managing mild occasional dryness or severe, chronic dry eye disease, we have a solution tailored to your needs.

👉 Shop Dry Eye Treatment Bundles

Our bundles are designed to give you a complete, cost-effective dry eye protocol — combining drops, lid hygiene, and heat therapy in one curated kit. Bundles are our most popular choice for patients who want a structured, all-in-one approach.

👉 Browse Eye Care Kits for Dry Eye Relief

Explore our full range of dry eye kits, from essentials starter packs through to comprehensive restoration systems for persistent or severe dry eye.

👉 Shop Optometrist-Approved Dry Eye Drops

Browse our full range of preservative-free lubricating drops, gels, and sprays — all selected for clinical evidence and patient tolerability. Free shipping on all orders.

👉 Explore the Full Dry Eye Range

Not sure where to start? Browse our complete dry eye collection and filter by product type, brand, or condition severity.

Not Sure Which Products Are Right for You?

Dry eye is highly individual — what works brilliantly for one person may not suit another. If you’re unsure where to start, our team is here to help. Every product we stock has been reviewed and approved by our optometrists, and we’re happy to guide you towards the right solution for your specific symptoms and lifestyle.

You can also use our dry eye bundles as a starting point — they’re curated to cover the most common presentations and give you everything you need to begin a structured treatment routine from day one.

View all dry eye bundles →

When to See a Specialist

Consult an optometrist or ophthalmologist if:

Symptoms persist despite consistent OTC treatment for 4–6 weeks
You experience significant pain, sudden vision changes, or photophobia
You suspect an underlying systemic condition may be contributing
You are considering or have recently had refractive surgery

This article is intended for informational purposes only and does not constitute medical advice. Always consult a qualified eye care professional for a diagnosis and personalised treatment plan.