The Effect of the Free-toroidal Design Lenses on the Subjective Visual Quality in the Myopic Population

Study Results

Results pending

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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Recruitment Status

COMPLETED

Total Enrollment

200 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-01-01

Study Completion Date

2021-12-24

Brief Summary

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A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses. To examine the effect of free-toroidal design and aspherical lens on the subjective visual quality among the myopic population.

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Detailed Description

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A prospective, self-control, double-blind design was conducted in Tianjin. Two hundred participants were assigned to wear two kinds of spectacle glasses. To examine the effect of free-toroidal design and aspherical lens on the subjective visual quality among the myopic population. The subjective visual quality of clarity and comfort were determined using a questionnaire when first wearing the glasses and after 1week.

Conditions

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Myopia Refractive Errors

Study Design

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Observational Model Type

OTHER

Study Time Perspective

PROSPECTIVE

Interventions

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The free-toroidal design lenses

Participants were asked to wear the new design lenses (the free-toroidal design lenses) for 1 week

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* health volunteers
* their spherical refraction from -0.50 to -8.00 Diopter, with the cylinder diopter less than -3.00 Diopter
* best corrected visual acuity (BCVA)≥ 20/20 in both eyes
* stable refraction (no change greater than 0.5 Diopter within two years)

Exclusion Criteria

* if they had Aphakic or intraocular lens eyes, had a history of trauma, active eye disease or ocular surgery, serious systemic diseases, or had a wearing history of corneal contact lenses.

Minimum Eligible Age

18 Years

Maximum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No