Comparative Evaluation of Side Cut Angles during Femtosecond LASIK

Status

Active, not recruiting

Phases

Phase 1

Study type

Observational

Source

ChiCTR

Registry ID

ChiCTR-OIN-12002703

Enrollment

Unknown

Registered

2012-07-30

Start date

2011-09-30

Completion date

Unknown

Last updated

2017-04-18

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

Conditions

Refractive Error

Interventions

Two groups:LASIK (Laser in situ Keratomileusis) once versus LASIK flap with side cut angle at 70 degrees once

Description:LASIK would be performed in both eyes of a suitable patient using the femtosecond technology in a standard manner. One eye would receive a flap cut with 115 degrees of side cut and the fel

(continue):Both eyes would be operated in the same sitting. LASIK flap with side cut angle at 70 degrees

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients intending to receive bilateral LASIK; 2. Age of >21 years; 3. Myopic refractive error; 4. Informed consent.

Exclusion criteria

Exclusion criteria: 1. Patients who are found to be unsuitable for inverse cut angle 2. Patients contraindicated for refractive surgery; 3. Pre-existing corneal haze; 4. Patients unable to complete the follow-up.

Design outcomes

Secondary

Measure	Time frame
Flap thickness at 1 week; Corneal thickness at 1 month and 3 months;	—

Primary

Measure	Time frame
UCVA, BCVA, Corneal hysteresis, Flap size at Baseline, 1 week, 1 month and 3 months;	—

Countries

China

Contacts

Public ContactDr. Vishal Jhanji

Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong

vishaljhanji@cuhk.edu.hk+852 3943 5807

Outcome results

None listed

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