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Trial details imported from

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Registration number
Ethics application status
Date submitted
Date registered
Date last updated

Titles & IDs
Public title
The Effect of Manuka Eye Drops on Tear Film Properties
Scientific title
The Effect of Manuka Eye Drops on Tear Film Properties
Secondary ID [1] 0 0
Universal Trial Number (UTN)
Trial acronym
Linked study record

Health condition
Health condition(s) or problem(s) studied:
Dry Eye Syndrome 0 0
Condition category
Condition code
Eye 0 0 0 0
Diseases / disorders of the eye

Study type
Description of intervention(s) / exposure
Other interventions - Optimel Antibacterial Manuka+ Dry Eye Drops
Other interventions - Systane Ultra Lubricating Eye Drops

Experimental: Manuka eye drops -

Active Comparator: Systane Ultra -

Other interventions: Optimel Antibacterial Manuka+ Dry Eye Drops
Leptospermum sp Honey 165mg/g

Other interventions: Systane Ultra Lubricating Eye Drops
Polyethylene glycol 400 0.4% and propylene glycol 0.3%

Intervention code [1] 0 0
Other interventions
Comparator / control treatment
Control group

Primary outcome [1] 0 0
Lipid layer thickness - Measured in nanometers using a Lipiview II
Timepoint [1] 0 0
28 days
Primary outcome [2] 0 0
Tear evaporation rate - Measured using a Modified Vapometer
Timepoint [2] 0 0
28 days
Primary outcome [3] 0 0
Fluorescein tear break-up time - Measured in seconds using a stop watch
Timepoint [3] 0 0
28 days
Secondary outcome [1] 0 0
Subjective comfort - Measured using questionnaires in paper format
Timepoint [1] 0 0
28 days

Key inclusion criteria
- Able to read and comprehend English and give informed consent as demonstrated by
signing a record of informed consent;

- General population aged 18 years and over;

- In good general health;

- Subjectively experiencing dry eye symptoms (e.g. burning, irritation, and discomfort
due to dryness of the eye or exposure to wind or sun). Participants will be selected
based on a minimum OSDI score of 13 points (1).

- Willing to discontinue CL wear for 1 week before first visit and continue to do so
until the conclusion of the study;

- Participant is willing to discontinue their use of any previous conventional dry eye
treatment method commenced before the study throughout the study;

- Willing to comply with the dosage and study visit schedule as directed by the

- No planned changes to diet and willing not to substantially alter their usual diet for
the duration of the study, including their typical intake of fish, green tea or oral
supplements known to have anti-inflammatory properties;

- Willingness to notify the study investigator if instructed to alter their diet by
health/medical practitioner.
Minimum age
18 Years
Maximum age
No limit
Both males and females
Can healthy volunteers participate?
Key exclusion criteria
- Allergy to benzoic acid preservatives;

- Allergy to honey products;

- Active anterior eye disease/ infection, inflammation/allergy that requires ocular
medical treatment;

- Eye injury or surgery in the past 6 months including chemical burns, penetrating
injuries, traumatic iritis, orbital fractures, laser surgery, strabismus surgery,
cataract or any other intraocular surgeries;

- Soft contact lens, rigid gas permeable, orthokeratology lens wearer within one week
prior to the study and during the study.

- Use of any of the following medications (including steroids) up to 12 weeks prior to
start of the study or during the course of the study:

- Ocular medication, category S3 and above;

- Any systemic or topical medications that will affect ocular physiology e.g.
anti-acne medications such as Roaccutane and corticosteroid or immunosuppressant
medications such as Hydrocortisone, Prednisolone and antihistamine medications
such as Claritine;

- Any systemic disease that may affect ocular health e.g. Graves disease, and
auto-immune diseases such as ankolysing spondylitis, multiple sclerosis and systemic
lupus erythematosis;

- Epilepsy or history of migraines exacerbated by flashing, strobe-like lights.

Study design
Purpose of the study
Allocation to intervention
Randomised controlled trial
Procedure for enrolling a subject and allocating the treatment (allocation concealment procedures)
Methods used to generate the sequence in which subjects will be randomised (sequence generation)
Masking / blinding
Blinded (masking used)
Who is / are masked / blinded?
The people receiving the treatment/s

The people analysing the results/data
Intervention assignment
Other design features
Not Applicable
Type of endpoint(s)
Statistical methods / analysis

Recruitment status
Data analysis
Reason for early stopping/withdrawal
Other reasons
Date of first participant enrolment
Date of last participant enrolment
Date of last data collection
Sample size
Accrual to date
Recruitment in Australia
Recruitment state(s)
Recruitment hospital [1] 0 0
School of Optometry and Vision Science - Sydney
Recruitment postcode(s) [1] 0 0
2050 - Sydney

Funding & Sponsors
Primary sponsor type
The University of New South Wales

Ethics approval
Ethics application status

Brief summary
Traditionally, Manuka honey has been used to combat against bacteria and reduce inflammation
(the body's way of reacting to infection, irritation or other injury). Due to the
inflammatory nature of dry eye, Manuka eye drops show promise as a treatment for dry eye
disease. The aim of this research is to compare the effects of two over the counter eye drops
that are used to treat dry eye conditions over a one month period.
Trial website
Trial related presentations / publications
Public notes

Principal investigator
Name 0 0
Jacqueline Tan, PhD
Address 0 0
University of New South Wales
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for public queries
Name 0 0
Address 0 0
Country 0 0
Phone 0 0
Fax 0 0
Email 0 0
Contact person for scientific queries

Summary results
Other publications