Quality of Life and Visual Acuity of Visglyc Eye Drops on Dry Eye Patients

Study Overview
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Brief Summary
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Clinical trial with medical devices, post-authorization, parallel, single-blind, randomized, comparative, prospective to study how afects the quality of life the use of ocular eye drops on patients with dry eye symptomatology and age-related loss of visual acuity. Secondary purposes: efects on the dry eye symptomatology, efect on visual acuity and treatment adherence.

Official Title
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Effect of Visglyc on the Quality of Life of Patients With Dry Eye Symptomatology and Age-related Loss of Visual Acuity

Conditions
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Dry Eye Syndromes, Cataract

Intervention / Treatment
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* Device: Vis Glyc Neo
* Device: Physiological saline solution


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Subjects between the ages of 50 and 70. Subjects with initial or slight changes characteristic of cataracts (grade 1-3 according to LOCS III classification). Subjects with dry eye symptoms. Confirmation of senile cataract diagnosis according to medical history and clinical observations, bilateral. Visual acuity equal to or greater than (0.6) in both eyes (with the best correction). Cataracts without the need for surgical intervention in the near future (1 year) based on the visual needs of the patient and ocular symptomatology. Subjects that have not undergone cataract surgery. Cases that do not accept surgery (weak corneas, high degree of myopia, sensitivity to light, severe dryness of the eyes or by their own decision). Subjects who agree to sign the IC (Informed Consent). Exclusion Criteria: Subjects with eye diseases such as glaucoma or diabetic retinopathy. Previous laser photocoagulation of the retina. Previous corneal or anterior segment surgery or previous corneal scars that may interfere with visualization or photographs. Presence of mature cataracts (grade 4-5/6 according to LOCS III classification) in both eyes. Candidates for surgery in the following year. Subjects with monocular aphakia (absence of crystalline lens) or secondary cataracts (associated with steroid use, local or total irradiation, local inflammation or degenerative processes, ocular trauma). Subjects with known hypersensitivity to any component of ophthalmic treatment. Subjects treated with drugs that may interfere with the evolution of the disease under study. Subjects who wear contact lenses. Pregnant women. Breastfeeding women. Subjects who have participated in another clinical trial within the last 30 days. Subjects with linguistic or psychological incapacity to understand and sign the CI.

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Supportive Care
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Vis Glyc Neo<br>Vis glyc eye drops is administered. Eye drops based on N-Acetylcoarnosine, Vaccinium myrtillus and Chondroitin sulfate | Device: Vis Glyc Neo<br>* 1 drop in each eye, three times a day.<br>|
| Active Comparator: physiological saline solution<br>Physiological saline solution ALVITA is administered. | Device: Physiological saline solution<br>* 1 drop in each eye, three times a day.<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in quality of visual life: NEI VFQ-25 questionnaire | In patients with dry eye symptomatology and age-related loss of visual acuity. Assessed using NEI VFQ-25 questionnaire. It is a questionnaire with 25 questions. Its format is divided into 4 subscales: visual function, difficulty with activities, driving a car and responding to vision problems. It consists of a base of 25 questions (each with five or six levels of response and scoring ranges) addressed to vision, representing 11 domains, elements or items related to health; 1) general vision, 2) eye pain, 3) near activities, 4) distance activities, 5) social functioning, 6) mental health, 7) role difficulties or limitations, 8) dependence, 9) driving, 10) color vision and 11) peripheral vision. Each domain receives an evaluation from 0 to 100; the high evaluation represents changes in visual functioning, where 0 is the lowest and 100 is the best possible. | Change from baseline quality of life at 6 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change in quality of visual life: NEI VFQ-25 questionnaire | In patients with dry eye symptomatology and age-related loss of visual acuity. Assessed using NEI VFQ-25 questionnaire. It is a questionnaire with 25 questions. Its format is divided into 4 subscales: visual function, difficulty with activities, driving a car and responding to vision problems. It consists of a base of 25 questions (each with five or six levels of response and scoring ranges) addressed to vision, representing 11 domains, elements or items related to health; 1) general vision, 2) eye pain, 3) near activities, 4) distance activities, 5) social functioning, 6) mental health, 7) role difficulties or limitations, 8) dependence, 9) driving, 10) color vision and 11) peripheral vision. Each domain receives an evaluation from 0 to 100; the high evaluation represents changes in visual functioning, where 0 is the lowest and 100 is the best possible. | 0, 30, 90, 180 days | 
| Visual Acuity Evaluation I | To assess the age-related visual acuity in patients. - The CSV-1000E contrast sensitivity test. This test provides for four (4) rows of sine-wave gratings. These gratings test the spatial frequencies of 3, 6, 12 and 18 cycles/degree (CPD). The levels of contrast are 1 to 8. The higher the contrast or modulation, the greater the difference in luminance and the better the object will be distinguished from the background. | 0, 90, 180 days | 
| Visual Acuity Evaluation II | To assess the age-related visual acuity in patients. - LOCS III classification of cataract grade using images obtained by ophthalmoscopy with slit lamp, which allows the study of the anterior segment of the patient's eye. It consists of six slit lamp images to evaluate core color (NC) and opalescence (NO); five backlit images to evaluate cortical cataract (C); and five backlit images to evaluate posterior subcapsular cataract (P). The severity of the cataract is classified on a decimal scale, and the patterns have regularly separated intervals on a decimal scale. | 0, 90, 180 days | 
| Visual Acuity Evaluation III | To assess the age-related visual acuity in patients. - Visual acuity test with the best correction in each eye using Snellen E-screens, measured in decimal system and MAR logarithm. Level of vision with respect to the row in Snellen's graph, which the rows consist of 1 to 11. The lower the row (greater numbers) the patient can distinguish, the greater the visual acuity he will have. | 0, 90, 180 days | 
| Dry eye symptomatology Evaluation I | Schirmer I test (without anesthesia): to determine the dryness of the eye. It consists of placing a thin strip of paper at the bottom of the conjunctival sac and before this foreign body see the patient's tear production capacity (measuring the wet area in mm). The less mm the less tear production capacity. | 0, 90, 180 days | 
| Dry eye symptomatology Evaluation II | - Fluorescein staining test: to assess dryness of the eye. Fluorescein is instilled in both conjunctival sacs. Absence of staining indicates integrity of the corneal epithelium. There are degrees of fluorescein staining from 0 to 5. The highest the worst results. | 0, 90, 180 days | 
| Dry eye symptomatology Evaluation III | The OSDI Test (ocular surface disease index) is a simple test created to establish the severity and classification of dry eye according to its symptoms. It is based on 12 different questions about situations related to patient symptomatology. A score of 100 corresponds to a total disability (answer At all times to all questions answered), while a score of 0 corresponds to no disability. | 0 and 180 days | 
| Treatment adherence | Ask patients about the daily administration of the treatment according to the protocol. | 30, 90 and 180 days | 
| Adverse events | Number of participants with Adverse events and types of adverse events. | 30, 90 and 180 days | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Dry eye, Cataract, Visual acuity, Quality of life, Eye drops, Dry eye symptomatology, N-acetylcarnosine, Vaccinium myrtillus, Chondroitin sulfate, Chondroitin sulphate, N-Acetylcharnosine