Dry eye is one of the most common reasons UK adults walk into a community pharmacy, and the shelf can be bewildering. Three classes of tear substitute dominate the UK market — hypromellose, carmellose and sodium hyaluronate — and the right choice depends on symptom severity, contact lens use, and whether blepharitis is in the background.
This article sets out the counter conversation as it happens in 2026, anchored in NICE CKS guidance on dry eye syndrome and the BNF treatment summary on dry and sore eyes.
What dry eye actually is
NICE CKS describes dry eye syndrome as a multifactorial condition of the tear film that results in ocular surface discomfort and visual disturbance. It splits broadly into:
- Aqueous-deficient dry eye — the eye is not producing enough watery tear
- Evaporative dry eye — the tear evaporates too quickly, usually because of meibomian gland dysfunction (often associated with blepharitis)
A pharmacist will often recognise evaporative dry eye from a history of crusting at the lash line, eyelid margin redness or a history of rosacea — and will suggest a separate lid-hygiene regime before or alongside tear substitutes.
The three main drop families
| Drop type | UK examples | Typical frequency | Best for |
|---|---|---|---|
| Hypromellose (HPMC) | Own-label hypromellose 0.3% | Up to hourly | Mild intermittent symptoms |
| Carmellose (CMC) | Optive, Celluvisc | 2 to 6 times a day | Moderate symptoms; longer retention |
| Sodium hyaluronate | Hyabak, Hylo-Forte | 3 to 4 times a day | Moderate to severe; post-surgery; contact lens users |
Hypromellose is the cheapest and thinnest. It is fine for mild, intermittent symptoms — for example, after a long day at a screen. Carmellose is thicker, retains longer on the ocular surface, and suits moderate symptoms. Sodium hyaluronate has higher viscosity and strong water-binding properties, and NICE CKS recognises it as a reasonable choice for moderate-to-severe dry eye.
Preservative-free — why it matters
Multi-dose bottles typically contain preservatives (most commonly benzalkonium chloride) to keep the drops sterile after opening. For occasional use this is fine. For patients using drops more than four to six times a day, or for those with established ocular surface disease, NICE CKS and the BNF recommend preservative-free preparations to avoid toxicity to the corneal epithelium.
Preservative-free products come as single-dose units (pods) or as multi-dose bottles with valve technology (for example Hylo-Forte). Pharmacies stock both.
Lipid-containing drops for evaporative dry eye
Evaporative dry eye, where the meibomian glands are not producing enough oil to stabilise the tear film, is often helped by a lipid-containing drop such as soybean-oil-based products or liposomal sprays applied to closed eyelids. These are widely available over the counter in UK pharmacies. A pharmacist will usually combine these with lid hygiene advice.
Blepharitis — usually in the background
NICE CKS on blepharitis is emphatic that tear substitutes alone will not manage the condition. Daily lid hygiene — warm compress, lid massage and lid margin cleaning — is the foundation of treatment. Over-the-counter products such as ready-made eyelid wipes or diluted baby shampoo cloths are sold for this purpose. If there is a rosacea-type picture, a GP may add oral tetracyclines such as doxycycline, but this is prescription territory.
When the pharmacy refers
NICE CKS lists the flags that should trigger referral rather than a counter sale:
- Sudden visual disturbance or loss
- Severe pain, photophobia or redness
- A foreign body sensation that does not settle
- Contact-lens-related symptoms (urgent — risk of microbial keratitis)
- Symptoms persisting beyond four weeks of appropriate OTC treatment
- A history of recent eye surgery where the surgeon has not signed off self-care
These go to the GP, the high-street optometrist through the Minor Eye Conditions Service (MECS, where commissioned), or to eye casualty depending on severity.
Contact lens users
Contact lens wearers need drops that are labelled compatible with lens wear. Most sodium hyaluronate drops are suitable; many preservative-containing products are not. A pharmacist will usually ask before supplying.
How pharmacies fit the wider care pathway
UK community pharmacies handle most mild and moderate dry eye in the UK without referral, and the Minor Eye Conditions Service in many areas extends this further through community optometry. The PharmSee pharmacy finder can help identify a convenient pharmacy for repeat OTC eye-drop supply; for readers interested in the clinical workforce, the jobs data gives a snapshot of the community pharmacist role market.
Caveats and sources
This article summarises UK guidance as of April 2026 and does not replace individual advice from a pharmacist, optometrist or GP. Product names are given as examples; the active ingredient is what matters rather than the brand.
Sources: NICE CKS on dry eye syndrome; NICE CKS on blepharitis; NHS patient information on dry eyes; BNF treatment summary on dry and sore eyes.