Hycosan Shield

Innovation in Evaporative Dry Eye & MGD Management

Hycosan Shield® is a unique, preservative free lipid layer replacement eye drop for the management of evaporative dry eye and Meibomian Gland Dysfunction (MGD).  It consists of a single ingredient* that forms a shield on the outer surface of the tear film to protect against evaporation.


Complete Lipid Replacement
Long Lasting
Preservative and Phosphate Free
6 months use from opening


There are two main types of Dry Eye; Aqueous deficient and Evaporative. Which type you have will determine how best to manage your symptoms.

Almost 90% of dry eye patients suffer from Evaporative Dry Eye. This form of Dry Eye occurs when there is an absence of the outer oily lipid layer, leading to evaporation of the aqueous layer. This in turn leads to a reduced tear film, exposing your eye to factors such as wind. This in turn leads to excessive watering, redness, grittiness and overall discomfort to the eye.

Hycosan Shield® offers improved tear film stability and symptom relief for those suffering with Evaporative DED and MGD

Significant improvement in OSDI and TBUT in both eyes, 5.9 second increase in TBUT across both eyes.
Long lasting relief: Evidence suggests Hycosan Shield® lasts for up to 4 hours.

How Hycosan Shield® Works

IMPROVES the quality & quantity of meibum

INCREASES the amount of expressible meibum

DECREASES the pressure required to express meibomian glands

Small Drops, Big benefits

Water & preservative free

Low surface tension

Same refractive index as natural tears

Amphiphilic properties

Small droplet size

No pH/Osmolarity therefore improving patient tolerability

Rapid spread across the ocular surface

Minimal visual impairment

Long lasting relief

Minimises spill over

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The Benefits of Preservative Free Drops
  • Benzalkonium chloride (BAK) is the most frequently used preservative in preserved eye drops. BAK can induce corneal and conjunctival epithelial cell apoptosis, damage corneal nerves, delay wound healing, interfere with tear film stability and cause loss of goblet cells.3
  • The negative symptoms experienced through the use of BAK-preserved drops may impact adherence to the prescribed treatment or management regime.4
  • Preservative-free tear replacement is preferred in cases of frequent and chronic application.5
  • Patients with Dry Eye Disease (DED), especially those with severe DED who require dosing over 4 times daily with lubricants or who use ocular lubricants in conjunction with other chronic topical therapies such as glaucoma medications, should avoid the use of ocular lubricants containing preservative.3
HYLO-Tear and HYLO-Forte Price Comparison
ProductHYLO TearHYLO ForteEvolve HAHyabakThealoz Duo
Drug Tariff price1£8.50£9.50£5.99£8.99£7.99
Average duration of scripts (days)30.3130.6519.7827.0725.55
Annual cost to ICS per patient£102.36£111.85£110.53£128.43£107.73


*Analysed data for preservative free (PF) ocular lubricants from Cegedim’s THIN database, Jan 2020-Dec 2020 (Representative of 400+ GP practices & 3.2M patient population)