Comparative Study of 0.5% Carboxymethylcellulose With 0.005% Stabilized Oxychlorocomplex (PURITE™) Versus 0.5% Carboxymethylcellulose in the Treatment of Dry Eye

Study Overview
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Brief Summary
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To compare if 0.5% carboxymethylcellulose with 0.005% SOC (Stabilized oxychloro complex) have the same effectiveness and safety as 0.5% carboxymethylcellulose on dry eye patients.

Detailed Description
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Dry eye is the very common disorder of tear film. There are millions of people who have dry eye around the world. Dry eye patients may suffer from redness, sandy sensation, itching, excessive watering, burning sensation, excessive mucous discharge, blurred vision, contact lens intolerance, and increased risk of ocular surface damage and ocular infection. Currently, there is no curative treatment for dry eye. The mainstay of treatment is still artificial tear supplement or punctual occlusion. In moderate to severe dry eye patients, the standard replacement is using non-preservative artificial tear more than 4 times a day. However, non-preservative artificial tear has some limitation such as inconvenience to carry, expensive, ocular surface trauma due to sharp plastic tip. Recently, there is improvement in using new disappearing preservatives in artificial tears. One of the new preservative is stabilized Oxychlorocomplex (SOC, Purite™) which can dissipate into water and sodium chloride, components of natural tears when exposed to light. It also has bactericidal and viricidal activities. Scanning electron microscopy also reveals that, carboxymethylcellulose (CMC) with SOC has a very low toxicity to corneal epithelium than other preservative. The past study had documented that 0.5% CMC preserved with SOC was safe, comfortable and well tolerated for mild to moderate dry eye patients when applying 4-8 times daily. The objective of this study was comparing efficacy, tolerability, and safety of 0.5% carboxymethylcellulose(CMC) with Stabilized Oxychlorocomplex(SOC) and 0.5% carboxymethylcellulose alone in patients with moderate to severe dry eye symptoms and/or signs.

Official Title
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A Comparative Study of 0.5% Carboxymethylcellulose With 0.005% Stabilized Oxychlorocomplex (PURITE™) Versus 0.5% Carboxymethylcellulose in the Treatment of Dry Eye: A Randomized Controlled Trial

Conditions
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Dry Eye Syndromes

Intervention / Treatment
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* Drug: 0.5% carboxymethylcellulose (CMC) with purite and CMC alone


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Out patients of Ophthalmology department, King Chulalongkorn Memorial Hospital, who have symptoms and/or signs of dry eye Bilateral dry eye symptoms and/or signs with equal severity between both eyes Age > 18 years, capable of following the study protocol, and considered be able to return for all scheduled visit Exclusion Criteria: Different severity of dryness between both eyes Current or recent use of topical ophthalmic medications that could affect dry eye condition History of any systemic or ocular disorder or condition that could possibly interfere with the interpretation of study result Recent contact lens wear (within one month) Known hypersensitivity to 0.005% SOC or carboxymethylcellulose Pregnancy or planned pregnancy Having received permanent punctal occlusion

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: 0.5% carboxymethylcellulose (CMC) with purite and CMC alone|nan|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Rose Bengal staining |  |  | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Fluorescein staining |  |  | 
| Total symptoms of dry eye |  |  | 
| Tear break up time (TBUT) |  |  | 
| Schirmer I test |  |  | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dry eye syndromes therapy