Evaluating Contact Lens Optics

N/ACompletedNCT05028790

David A Berntsen, OD PhD16 enrolled

Overview

This study will evaluate changes in refractive error and visual performance between a single vision soft contact lens and multifocal soft contact lens

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

OTHER

Masking

SINGLE

Enrollment

16

Conditions

Interventions

Single vision contact lensDEVICE

Participants will wear a single vision soft contact lens during the study visit

Multifocal contact lensDEVICE

Participants will wear a multifocal soft contact lens during the study visit

Eligibility

Sex: ALLMin age: 18 YearsMax age: 39 Years

Medical Language ↔ Plain English

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 -6.00D 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 * Unwilling to have contact lens fit photographed * Pregnant and/or lactating females, by self-report

Locations (1)

University of Houston

Houston, Texas, United States

Outcomes

Primary Outcomes

Visual Performance

Low contrast visual acuity was measured for each participant while wearing each of the two lenses

Time frame: Through completion of study visit, an average of 2.5 hours

Secondary Outcomes

Spherical Equivalent Refractive Error On-axis

Refraction was measured after cycloplegia with two drops of 1% tropicamide hydrochloride. Spherical equivalent refractive error was then measured 3 times with an aberrometer and averaged.

Time frame: Through completion of study visit, an average of 2.5 hours

Spherical Equivalent Refractive Error at 30 Degrees Temporal Retina

Cycloplegic spherical equivalent refractive error was measured 3 times with an aberrometer and averaged.

Time frame: Through completion of study visit, an average of 2.5 hours

Spherical Equivalent Refractive Error at 20 Degrees Temporal Retina

Cycloplegic spherical equivalent refractive error was measured 3 times with an aberrometer and averaged.

Time frame: Through completion of study visit, an average of 2.5 hours

Spherical Equivalent Refractive Error at 20 Degrees Nasal Retina

Cycloplegic spherical equivalent refractive error was measured 3 times with an aberrometer and averaged.

Time frame: Through completion of study visit, an average of 2.5 hours

Spherical Equivalent Refractive Error at 30 Degrees Nasal Retina

Cycloplegic spherical equivalent refractive error was measured 3 times with an aberrometer and averaged.

Time frame: Through completion of study visit, an average of 2.5 hours

Data from ClinicalTrials.gov

This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.

NCT05028790 - Evaluating Contact Lens Optics | Crick | Crick