A pilot study of Lasik for presbyopia correction with spherical aberration modulation

Status

Active, not recruiting

Phases

Early Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR-IPC-15005842

Enrollment

Unknown

Registered

2015-01-16

Start date

2014-01-01

Completion date

Unknown

Last updated

2020-04-27

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

Conditions

presbyopia

Interventions

Case series:surgery

Eligibility

Sex/Gender

All

Age

43 Years to 62 Years

Inclusion criteria

Inclusion criteria: 1. Aged 43-62 years; 2. Patients were enrolled in this study if they were presbyopic, had corrected distance visual acuity (CDVA) of 20/25 or better in both eyes, were medically suitable for LASIK, and could tolerate at least -0.75 D anisometropia during the tolerance test.

Exclusion criteria

Exclusion criteria: Certain degenerative diseases of cornea; Severely dry eyes; Other Ophthalmic diseases; Certain auto-immune condition.

Design outcomes

Primary

Measure	Time frame
vision acuity;	—

Secondary

Measure	Time frame
manifest refraction;Contrast sensitivity;amplitude of accommodation;aberrations;	—

Countries

China

Contacts

Public ContactLiu Quan

Zhongshan Ophthalmic Center of Sun Yat-Sen University

drliuquan@163.com+86 13808864836

Outcome results

None listed

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