Measuring the Peripheral Optical Quality of The Eye

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT03479827

Enrollment

Registered

2018-03-27

Start date

2018-08-31

Completion date

2020-11-29

Last updated

2022-08-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Nearsightedness

Brief summary

The goal of the study is to quantify wavefront aberration profiles of the eye with and without contact lens across the visual field. This will enable us to investigate the impact of the aberration on retinal image quality.

Detailed description

The goal of this study is to investigate the effects of monofocal and bifocal soft contact lenses in the changes of peripheral optical quality and through-focus visual performance on real eyes. The goal will be accomplished by performing optical measurements using Shack-Hartmann wavefront sensor with and without the use of single vision and bifocal soft contact lenses.

Interventions

DEVICEMonofocal Contact Lens

A monofocal contact lens will be used for this measurement.

DEVICEBifocal Contact Lens

A bifocal contact lens will be used for this measurement.

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 60 Years

Healthy volunteers

Yes

Inclusion criteria

A person will be included in the study if he/she: * Is 18 years or older and has full legal capacity to volunteer. * Has no ocular condition or pathology, which may impact visual acuity e.g. keratoconus, amblyopia, cataract, macular degeneration; * Has no active ocular disease or allergic conjunctivitis; * Is not using any topical ocular medications; * Is willing and able to follow instructions; * Has voluntarily agreed to participate in the study by signing the statement of informed consent.

Exclusion criteria

A person will be excluded from the study if he/she: * Is under the age of 18 or over the age of 60 yrs. * Correctable with high contrast logMAR acuity (EDTRS) testing to 20/20 or better; * Pregnant at the time of enrolment in the study; * Unable to handle, insert, remove or care for the study lenses; * Considered by the Investigator to not be a suitable candidate for participation.

Design outcomes

Primary

Measure	Time frame	Description
Mean Wavefront aberrations	less than 2 hours	The scanning wavefront sensor will be used to collect data. Mean Wavefront aberrations for each trail will be analyzed.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026