Impact of Positive & Negative Lens-Induced Defocus on Contrast-Sensitivity in Myopic & Non-Myopic Adults
NCT ID: NCT06753032
Last Updated: 2024-12-31
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
NA
36 participants
INTERVENTIONAL
2024-02-28
2025-03-01
Brief Summary
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
DIAGNOSTIC
NONE
Study Groups
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interventional group
Positive Lens-Induced Defocus Using Spectacle Lenses (+2.00 D) for Myopic Participants
Intervention Description: This group will be exposed to positive defocus induced by +2.00 D spectacle lenses. The lenses are designed to create optical blur to evaluate the effects on contrast sensitivity and visual fatigue. Measurements will be conducted at baseline, 2 weeks, and 4 weeks after exposure to assess changes in visual function."
Interventional group II
Negative Lens-Induced Defocus Using Spectacle Lenses (-2.00 D) for Myopic Participants
Intervention Description: This group will be exposed to negative defocus induced by -2.00 D spectacle lenses. The induced defocus will allow for the evaluation of its impact on contrast sensitivity and visual fatigue. Assessments will be carried out at baseline, 2 weeks, and 4 weeks."
Interventional group III
Positive Lens-Induced Defocus Using Spectacle Lenses (+2.00 D) for Non-Myopic Participants
ntervention Description: This group will undergo positive defocus using +2.00 D spectacle lenses. The intervention aims to examine the effect of induced defocus on contrast sensitivity and visual fatigue in non-myopic participants. Data will be collected at baseline, 2 weeks, and 4 weeks."
Interventional group IV
Negative Lens-Induced Defocus Using Spectacle Lenses (-2.00 D) for Non-Myopic Participants
Intervention Description: This group will experience negative defocus induced by -2.00 D spectacle lenses. The purpose is to evaluate how negative lens-induced defocus affects contrast sensitivity and visual fatigue in non-myopic participants. Measurements will be taken at baseline, 2 weeks, and 4 weeks.
Interventions
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Positive Lens-Induced Defocus Using Spectacle Lenses (+2.00 D) for Myopic Participants
Intervention Description: This group will be exposed to positive defocus induced by +2.00 D spectacle lenses. The lenses are designed to create optical blur to evaluate the effects on contrast sensitivity and visual fatigue. Measurements will be conducted at baseline, 2 weeks, and 4 weeks after exposure to assess changes in visual function."
Negative Lens-Induced Defocus Using Spectacle Lenses (-2.00 D) for Myopic Participants
Intervention Description: This group will be exposed to negative defocus induced by -2.00 D spectacle lenses. The induced defocus will allow for the evaluation of its impact on contrast sensitivity and visual fatigue. Assessments will be carried out at baseline, 2 weeks, and 4 weeks."
Positive Lens-Induced Defocus Using Spectacle Lenses (+2.00 D) for Non-Myopic Participants
ntervention Description: This group will undergo positive defocus using +2.00 D spectacle lenses. The intervention aims to examine the effect of induced defocus on contrast sensitivity and visual fatigue in non-myopic participants. Data will be collected at baseline, 2 weeks, and 4 weeks."
Negative Lens-Induced Defocus Using Spectacle Lenses (-2.00 D) for Non-Myopic Participants
Intervention Description: This group will experience negative defocus induced by -2.00 D spectacle lenses. The purpose is to evaluate how negative lens-induced defocus affects contrast sensitivity and visual fatigue in non-myopic participants. Measurements will be taken at baseline, 2 weeks, and 4 weeks.
Eligibility Criteria
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Inclusion Criteria
* Participants with a confirmed diagnosis of myopia or non-myopia.
* Best corrected visual acuity of 20/30 or better.
* No history of ocular surgery or significant ocular disease.
* Informed consent was obtained.
Exclusion Criteria
* Presence of binocular vision anomalies or strabismus.
* Pregnant or nursing women.
* Any current use of medications affecting visual function (e.g., medications causing visual side effects).
18 Years
50 Years
ALL
Yes
Sponsors
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Superior University
OTHER
Responsible Party
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Muhammad Naveed Babur
Principal Investigator
Locations
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Tehsil Headquarters (THQ)
Taunsa, Punjab Province, Pakistan
Countries
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Other Identifiers
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MSRSW/Batch-Fall22/750
Identifier Type: -
Identifier Source: org_study_id