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Dry EyeNCT05720754

Temperature on Evaporative Dry Eye

A study testing Diquafosol tetrasodium and Heated eye mask in people with Dry Eye, run by He Eye Hospital at 1 site in China.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Ocular surface temperature of a normal person is around 34.6 degree centigrade. After instilling the eye drop, depending on the temperature of the eye drop and the ocular surface, the ocular surface temperature will temporally increase or decrease sightly. Read more about this study

Who is it for?
Ages 18 to 90 years
Conditions the study is for
Dry Eye
What is being tested?
Diquafosol tetrasodium and Heated eye mask
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
45 participants
Where
1 siteChina
Study dates
2 Apr 2023to 1 Aug 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 to 90 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age ≥18 years
  • The presence of at most one symptom including burning, foreign body sensation, itching or eye fatigue for 3 months
  • OSDI score ≥ 13 and TBUT <5 s or NIBUT < 10s
  • Able and willing to comply with the treatment/follow-up schedule

Who cannot join

  • A recent history (past 30 days) of topical ophthalmic medication use, including antibiotics, steroids, non-steroidal anti-inflammatory drugs, or required the chronic use of topical ophthalmic medications
  • Eyelids or intraocular tumors that should not put pressure
  • Active allergy or infection or inflammatory disease that may have prevented the subjects from completing the study at the ocular surface
  • Any structural change in lacrimal passage
  • Glaucoma
  • Diabetes or other systemic, dermatologic, or neurologic diseases that affect the health of ocular surface
  • Use of any systemic anti-inflammatory drugs or medication that may interfere with tear production, such as antianxiety, antidepressive, and antihistamine medications within 3 months

Trial locations and contacts

1 site in 1 country.

Emmanuel Eric Pazo, MD, PhD contact

0086-18612782131

ericpazo@outlook.com

China1 site
  • He Eye Hospital

    Shenyang, Liaoning, 110034

    Emmanuel Eric Pazo, PhD, 0086-18612782131, ericpazo@outlook.com

    Qin Guanghao, MD, 0086-18842664420, qinguanghao@hsyk.com.cn

Other trials in China

About this study

Official title: Safety and Efficacy of Heated Artificial Tears Under Practical Conditions

Ocular surface temperature of a normal person is around 34.6 degree centigrade. After instilling the eye drop, depending on the temperature of the eye drop and the ocular surface, the ocular surface temperature will temporally increase or decrease sightly. Warm feeling will make blood vessels dilated and more blood will pass through to bring more blood flow out of our body to the heated area of the body and makes cells more permeable. Therefore, heating the ocular surface with heated eye mask after instilling artificial tears has the possibility to improve drug permeability on the ocular surface.

Read the detailed description

Evaporative dry eye (EDE) is common and can lead to ocular pain, decreased visual quality, and reduced quality of life. 3% diquafosol (DQS) ophthalmic solution and heated eye mask (HEM) have been found to be beneficial in reducing signs and symptoms of dry eye. Warm compress therapy temperature of 40 °C to 45 °C have been typically advocated to melt the meibium causing obstruction at the orifices of the meibomian gland, eventually allowing increased lipid layer of the tear film. While in impact of heat on the ocular surface (OS) has not been extensively studied. Controlled and precise application of heat has the ability to create a cascade of events in the skin and thus aids in facilitating a faster movement of molecules into and across the skin. Possible mechanisms of enhancing drug permeation include on the ocular surface could be: (mechanisms may operate individually or concurrently):

  • increase in drug diffusivity in the vehicle and/or in the ocular surface
  • increase in partitioning and diffusion
  • alteration in the lipid structure
  • increased local blood flow Therefore, the purpose of this RCT is to assess the impact of instilling 3% DQS ophthalmic solution follow by HEM raising the OS temperature by 40 degrees centigrade for 10 minutes.
Conditions
Dry Eye
Being tested
Diquafosol tetrasodium, Heated eye mask
Keywords
dry eye, heated eye mask, diquafosol, tear breakup time, ocular surface disease index
Medical subject headings
Dry Eye Syndromes

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Diquafosol tetrasodiumDrug

    Also called Diquas

    3% Diquafosol tetrasodium eye drops will be used to assess its usefulness in dry eye signs and symptoms

  • Heated eye maskDevice

    Heated eye mask will be used to assess its usefulness in dry eye signs and symptoms

Study groups in NCT05720754
Study groupRoleWhat they receive
DQS+HEMExperimentalParticipants in the DQS+ group used DQS 1 drop 3 times/per day with heated eye mask for 2 weeks
Receives: Drug: Diquafosol tetrasodium; Device: Heated eye mask
DQSActive comparatorParticipants in the DQS group used DQS 1 drop 3 times/per day for 2 weeks
Receives: Drug: Diquafosol tetrasodium
HEMActive comparatorParticipants in the HEM group used heated eye mask 3 times/per day for 2 weeks
Receives: Device: Heated eye mask

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Non-invasive tear break-up time (NIBUT)

    Non-invasive initial tear film breaking time will be assessed using the Keratograph 5M (Oculus, Germany) topographer. Three sequentially readings will be captured, and the median value will be included in the final analysis. The median value will be recorded.

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

  2. Ocular Surface Disease Index (OSDI)

    OSDI, which is a questionnaire consisting of 12 questions for evaluating the effects of dry eye syndrome on vision, ocular symptoms and any condition associated with DED. The patient will answer each question on a scale ranging from 0 to 4, with 0 indicating 'none of the time' and 4 indicating 'all of the time'. If a certain question is deemed irrelevant, it will be marked as 'not applicable (N/A)' and excluded from the analysis. The OSDI total score is calculated according to the following formula. The scale ranges from 0 to 100, with higher scores representing more severe cases of dry eye syndrome.

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined

    Measured: Day-0 (baseline), day-7, and day-14

Secondary outcomes (5)
  1. Fluorescein and lissamine conjunctival and cornea staining (CFS)

    Fluorescein and lissamine staining of the ocular surface will be divided into three zones comprising nasal conjunctival, corneal, and temporal conjunctival areas. The staining score ranged from 0 to 3 for each zone, yielding a total score of 0-9 for the ocular surface.

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

  2. Meibomian gland function and secretion quality

    Meibum quality will be assessed under a slit-lamp: Five meibomian gland in the middle parts of the eyelid will be assessed using a scale of 0 to 3 for each gland (0 represented clear meibum; 1 represented cloudy meibum; 2 represented cloudy and granular meibum; and 3 represented thick, toothpaste like consistency meibum)

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

  3. Tear Film Lipid Layer Score (TFLL)

    Tear Film Lipid Layer interferometry will be assessed using DR-1 (Kowa, Nagoya, Japan). The results will be graded as follows: grade 1, somewhat gray color, uniform distribution; grade 2, somewhat gray color, nonuniform distribution; grade 3, a few colors, nonuniform distribution; grade 4, many colors, nonuniform distribution; grade 5, corneal surface partially exposed.

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

  4. Tear meniscus height (TMH)

    Non-invasive first tear film breakup time using the Keratograph 5M (Oculus, Germany) topographer will be measured three times consecutively and the median value was recorded.

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

  5. Conjunctival hyperemia (RS score)

    Conjunctival hyperemia (RS score) will be assessed by Keratograph image (Oculus, Germany) of 1156*873 pixels, redness score (RS) (accurate to 0.1 U) was displayed on the computer screen that ranged from 0.0 (normal) to 4.0 (severe).

    • Changes at day-14 and day-28 will be compare with baseline measurements.
    • Comparison between groups at baseline, day-14 and day-28 will also be examined.

    Measured: Day-0 (baseline), day-7, and day-14

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Feb 2023
  2. Study start2 Apr 2023 (estimated)
  3. Primary completion1 Jul 2023 (estimated)
  4. Study completion1 Aug 2023 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Care provider, Investigator, Outcomes assessor
Enrolment
45 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05720754
Sponsor's protocol ID
EDEDQS2023
Status last verified
Feb 2023
First submitted
31 Jan 2023
Last updated
9 Feb 2023
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Yes: The study's findings will be shared regardless of the effect's direction. All possible beneficiaries of the research, including patients, carers, family, doctors, advisory boards, and medical boards, will receive trial data. Publications in high impact, open-access medical journals and talks at national and international medical conferences will serve this purpose.

Publications

  • Ma J, Pazo EE, Zou Z, Jin F. Prevalence of symptomatic dry eye in breast cancer patients undergoing systemic adjuvant treatment: A cross-sectional study. Breast. 2020 Oct;53:164-171. doi: 10.1016/j.breast.2020.07.009. Epub 2020 Aug 5.

    PubMed 32836200
  • Bron AJ, de Paiva CS, Chauhan SK, Bonini S, Gabison EE, Jain S, Knop E, Markoulli M, Ogawa Y, Perez V, Uchino Y, Yokoi N, Zoukhri D, Sullivan DA. TFOS DEWS II pathophysiology report. Ocul Surf. 2017 Jul;15(3):438-510. doi: 10.1016/j.jtos.2017.05.011. Epub 2017 Jul 20.

    PubMed 28736340
  • Bron AJ, Tiffany JM. The contribution of meibomian disease to dry eye. Ocul Surf. 2004 Apr;2(2):149-65. doi: 10.1016/s1542-0124(12)70150-7.

    PubMed 17216085
  • Chhadva P, Goldhardt R, Galor A. Meibomian Gland Disease: The Role of Gland Dysfunction in Dry Eye Disease. Ophthalmology. 2017 Nov;124(11S):S20-S26. doi: 10.1016/j.ophtha.2017.05.031.

    PubMed 29055358
  • Craig JP, Nichols KK, Akpek EK, Caffery B, Dua HS, Joo CK, Liu Z, Nelson JD, Nichols JJ, Tsubota K, Stapleton F. TFOS DEWS II Definition and Classification Report. Ocul Surf. 2017 Jul;15(3):276-283. doi: 10.1016/j.jtos.2017.05.008. Epub 2017 Jul 20.

    PubMed 28736335
  • Kulkarni AA, Trousdale MD, Stevenson D, Gukasyan HJ, Shiue MH, Kim KJ, Read RW, Lee VH. Nucleotide-induced restoration of conjunctival chloride and fluid secretion in adenovirus type 5-infected pigmented rabbit eyes. J Pharmacol Exp Ther. 2003 Jun;305(3):1206-11. doi: 10.1124/jpet.103.049221. Epub 2003 Mar 20.

    PubMed 12649304
  • Dota A, Sakamoto A, Nagano T, Murakami T, Matsugi T. Effect of Diquafosol Ophthalmic Solution on Airflow-Induced Ocular Surface Disorder in Diabetic Rats. Clin Ophthalmol. 2020 Apr 1;14:1019-1024. doi: 10.2147/OPTH.S242764. eCollection 2020.

    PubMed 32280196
  • Jumblatt JE, Jumblatt MM. Regulation of ocular mucin secretion by P2Y2 nucleotide receptors in rabbit and human conjunctiva. Exp Eye Res. 1998 Sep;67(3):341-6. doi: 10.1006/exer.1998.0520.

    PubMed 9778415
  • Tanioka H, Kuriki Y, Sakamoto A, Katsuta O, Kawazu K, Nakamura M. Expression of the P2Y(2) receptor on the rat ocular surface during a 1-year rearing period. Jpn J Ophthalmol. 2014 Nov;58(6):515-21. doi: 10.1007/s10384-014-0342-4. Epub 2014 Sep 2.

    PubMed 25179431
  • Cowlen MS, Zhang VZ, Warnock L, Moyer CF, Peterson WM, Yerxa BR. Localization of ocular P2Y2 receptor gene expression by in situ hybridization. Exp Eye Res. 2003 Jul;77(1):77-84. doi: 10.1016/s0014-4835(03)00068-x.

    PubMed 12823990

Questions about this trial

What is this clinical trial studying?

A study testing Diquafosol tetrasodium and Heated eye mask in people with Dry Eye, run by He Eye Hospital at 1 site in China.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 9 Feb 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Emmanuel Eric Pazo, MD, PhD (0086-18612782131, ericpazo@outlook.com), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Non-invasive tear break-up time (NIBUT) (time frame: Day-0 (baseline), day-7, and day-14). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05720754, which also lists 10 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Feb 2023; AzTrials last refreshed its copy on 27 Oct 2026.

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