Dry Eye Syndromes
Conditions
Keywords
Cornea, Dry Eye, Quantum Molecular Resonance
Brief summary
The Rexon Eye device (Resono Ophthalmic Inc, Trieste, Italy) is a new device based on QMR technology. Quantum Molecular Resonance (QMR) is a technique in which low-intensity, high-frequency electric currents are administered to a biological tissue through contact electrodes. The device applies stimulation to the epidermis of closed eyelids up to the lid margin by means of specially designed goggles. Previous studies have shown that it is relatively safe with high patient satisfaction. Preliminary studies have also shown it is effective for accelerating healing in chronic wounds and treating dry eye symptoms.
Detailed description
In this study, the investigators aim to examine the efficacy of the Rexon eye device for the treatment of dry eye signs and symptoms in a randomized double-blind placebo-controlled fashion among a cohort of prospectively recruited patients with dry eye. The control group will receive a similar application of treatment with the device goggles disconnected from the device, effectively receiving no treatment. The treatment will be performed by research assistants following thorough instruction by the manufacturing company representatives and/or provided material. Participants will be actively questioned on any harms or side effects in every meeting. Outcomes will be assessed based on clinical signs and by validated questionnaires on dry eye symptoms (OSDI). Informed written consent will be obtained from all participants involved in the study prior to enrollment. The goal of the study is to evaluate the Rexon device as a possible additional treatment option for patients with dry eye or to establish it has no added benefit.
Interventions
DEVICERexon device
Rexon device for 20 minutes each session. A total of 4 sessions with one week apart from each other.
Sponsors
Assaf-Harofeh Medical Center
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
SINGLE (Subject)
Masking description
The patient does not know wheater they are on treatment or placebo arm.
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Patients above the age of 18 years * Patients who are willing and able to consent and adhere to the research plan * Patients diagnosed with dry eye or patients who are at risk for dry eye
Exclusion criteria
* Active infection of the eyelid or periorbital area * Patients who are pregnant or lactating * Patients under the age of 18 * Those scheduled for (\<30 days) or immediately after (\<30 days) ocular surgery (excluding cataract and eyelid surgery) * Patient who do not adhere to all four treatment sessions.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Change in Ocular Surface Disease Index (OSDI) Questionnaire | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | A validated questionnaire that assess the symptoms of ocular irritation in dry eye disease. and how they affect functioning related to vision. This 12-item questionnaire assesses dry eye symptoms and the effects it has on vision-related function in the past week of the patient's life. The questionnaire has 3 subscales: ocular symptoms, vision-related function, and environmental triggers. Patients rate their responses on a 0 to 4 scale with 0 corresponding to none of the time and 4 corresponding to all of the time. A final score is calculated which ranges from 0 to 100 with scores 0 to 12 representing normal, 13 to 22 representing mild dry eye disease, 23 to 32 representing moderate dry eye disease, and greater than 33 representing severe dry eye disease |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Change in Meibomian gland dysfunction Grading | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | Min = 0. Max =4. Low score: low Meibomian gland dysfunction (normal) High score: Meibomian gland dysfunction (pathology) |
| Change in Corneal Staining | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | We measure the amount of fluorescein dots (score 0 for 0 dots, score 1 for 1-5 dots, score 2 for 6-30 dots, score 3 for \>30 dots) Additional 1 point for - Patches of confluent staining Additional 1 point for - Staining in the pupillary area Additional 1 point for - One or more filament Min = 0. Max =6. Low score: Clear cornea (normal) High score: pathological cornea (pathology) |
| Change in Tear breakup time | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | Measures the number of seconds for the fluorescein to break and thus assesses the stability of tear film. Min = 0. Max = 20. Low score: Tear film instability (pathology) High score: Normal Tear film stability (normal) |
| Change in Schirmer with anesthesia | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | The Schirmer's test evaluates aqueous tear production. It is helpful in the assessment of patients with signs and/or symptoms of dry eye - as it can determine whether surface dryness is due to reduced tear production from the lacrimal glands as opposed to some other cause. The Schirmer basal secretion test was performed for each patient in both eyes in the following manner: Topical anesthetic was applied to the eye, and the conjunctival fornix was dried with a cotton tip applicator. After a 2-minute waiting period, the paper strip was folded and placed between the lower eyelid and the globe at the junction between the middle and lateral thirds of the eyelid. After 5 minutes, the filter paper is removed and the amount of wetting from the fold is measured (mm) We used the standard (no. 41 Whatman) filter paper. Min = 0 mm Max = 30 mm Low score: Low tear secretion (pathology) High score: Normal tear secretion (normal) |
| Change in Corrected visual acuity | At baseline (pre-intervention) and up to 4 weeks after treatment ends (after-intervention) | LogMAR scale. Min = 0. Max = 1. Low score: Normal visual acuity (normal) High score: Imparied visual acuity (pathology) |
Countries
Israel
Contacts
Primary ContactAsaf Shemer, MD
Backup ContactAdi Einan
Outcome results
None listed