Contact Lens Optics and Visual Performance

Not Applicable

Completed

• Conditions: Myopia
• Interventions: Device: Single vision contact lens; Device: Multifocal contact lens

• Registration Number: NCT05308069
• Lead Sponsor: David A Berntsen, OD PhD

Brief Summary

This study will evaluate changes in visual performance at different pupil sizes between a single vision soft contact lens and multifocal soft contact lens, and compare refractive error measured between these two lenses with an autorefractor and an aberrometer

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2022-03-24
• Study First Submitted QC: 2022-03-24
• Study First Posted: 2022-04-01
• Study Start: 2022-06-13
• Primary Completion: 2022-07-27
• Study Completion: 2022-07-27
• Status Verified: 2022-08
• Last Update Submitted: 2022-08-06
• Last Update Posted: 2022-08-09

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 24

Inclusion Criteria

• Able to read and understand the informed consent document
• 18 to 39 years of age (inclusive)
• Best corrected visual acuity of 20/25 or better in the right eye
• Refractive error from -1.00D to -8.00D with astigmatism less than or equal to -1.00D in the right eye (corneal plane)

Exclusion Criteria

• Any ocular or systemic conditions affecting vision, refraction, or the ability to wear a soft contact lens
• History of ocular trauma or surgery causing abnormal or distorted vision
• Current Rigid Gas Permeable (RGP) contact lens wearers
• Pregnant and/or lactating females, by self-report

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Single vision contact lens	Single vision contact lens	Subjects will wear a single vision soft contact lens during the study visit
Multifocal contact lens	Multifocal contact lens	Subjects will wear a multifocal soft contact lens during the study visit

Primary Outcome Measures

Name	Time	Method
Visual performance	Through completion of study visit, an average of 3 hours	Low contrast visual performance will be measured at different pupil sizes for each subject while wearing each of the two lenses

Secondary Outcome Measures

Name	Time	Method
Refractive error	Through completion of study visit, an average of 3 hours	Refractive error will be measured with an autorefractor and an aberrometer with subjects wearing each of the two lenses

Trial Locations

Locations (1)

University of Houston; 🇺🇸 Houston, Texas, United States