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Effect of Abbe Number of Eyeglasses on Visual Quality in Myopiceyes

Effect of Abbe Number of Eyeglasses on Visual Quality in Myopiceyes

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR1900020661
Enrollment
Unknown
Registered
1990-01-01
Start date
2019-03-01
Completion date
Unknown
Last updated
2019-01-14

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

Conditions

Myopia

Interventions

mild myopia:different abbe number of eyeglasses
mild to moderate myopia:ifferent abbe number of eyeglasses

Sponsors

West China Hospital, Sichuan University
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 35 Years

Inclusion criteria

Inclusion criteria: 1. Aged from 18 to 35 years old 2. Best corrected vision acuity (BCVA) better than 1.0 3. With sphere from -0.75D-4.00D, astigmatism less than 1.50D and anisometropia less than 1.00D

Exclusion criteria

Exclusion criteria: 1. other ocular diseases; 2. ocular surgery.

Design outcomes

Primary

MeasureTime frame
Contrast sensitivity;Sphcl;Coma;Root mean square values of Zernike coefficients of third- to fifth-order aberration;Root mean square values of total higher –order aberrations;Cut off frequency of modulation transfer function ;Visual Strehl ratio of point spread function ;—

Countries

China

Contacts

Public ContactLiu Longqian

Department of Ophthalmology, West China Hospital, Sichuan University

bq15651@hotmail.com+86 18980601756

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026