Measurement of Antioxidant Activity and Oxidative Stress in Patients Undergoing Ophthalmic Surgery.

Chang Gung Medical Foundation

Status: Enrolling

Conditions: Myopia; Cataract

Study type: Observational

Funder types: Other

Identifiers

NCT06743594

202401405A3

Details and patient eligibility

About

This trial hypothesized that novel laser refractive surgery techniques (LASIK, KLEx) or laser-assisted cataract surgery (FLACAS) could suppress postoperative inflammation and improve recovery in patients by reducing oxidative stress generated by the surgical procedure. It is also intended to verify whether the new laser technology is necessary for clinical use in groups with low antioxidant activity through the detection of antioxidant activity in the eyes of patients.

Full description

Simultaneously measure total reactive oxygen species (ROS), antioxidant capacity (TAC) and ascorbic acid (AA) in aqueous humor (cataract surgery only) or tears. All patients underwent the same examination at our institution, including uncorrected visual acuity (UCVA), intraocular pressure (IOP), as well as central corneal thickness (CCT) with pneumatic tonometer, apparent refraction with autorefractor, and corneal curvature with keratometer. The axial length (AXL), anterior chamber depth (ACD) and lens thickness (LT) were measured by optical biometer.

Enrollment: 1,000 estimated patients

Sex: All

Ages: 20+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• at least 20 years old
• corneal refractive surgery or cataract surgery patients

Exclusion criteria

• patients with eye infections
• presence of severe retinal disease
• presence of severe eye injury or severe ptosis

Trial design

1,000 participants in 4 patient groups

LASIK

Description:

Femtosecond-LASIK in myopia

KLEx

Description:

Kerato-lenticule Extraction in myopia

Traditional Cataract Surgery

Description:

Cataract Surgery with Phacoemulsification

Laser-Assisted Cataract Surgery

Description:

Cataract Surgery with LenSx Femtosecond Laser