Corneal Edema After Phacoemulsification (COPHA)

Centre Hospitalier Régional Metz-Thionville

Status: Completed

Conditions: Cataract

Treatments: Procedure: Divide and conquer; Procedure: Subluxation

Study type: Observational

Funder types: Other

Identifiers

NCT03689270

2015-12Obs-CHMRT

Details and patient eligibility

About

To compare the impact of two phacoemulsification techniques (subluxation versus divide-and-conquer) on postoperative corneal edema at postoperative hour 1 and day 4.

Full description

Phacoemulsification is the procedure of choice for most surgeons performing cataract surgery. Alternative techniques have been in development over the last twenty years, with the hope of optimizing operating times, total ultrasound energy used, patient safety, patient satisfaction and visual recovery associated with cataract surgery.

Divide-and conquer is the parent nucleofracture technique.The subluxation technique is a newer technique that is less frequently used because of an increased risk of corneal endothelium damage.

The aim of this comparative study was to evaluate corneal edema immediately after surgery performed with the subluxation technique versus divide-and-conquer. Corneal edema was determined by measuring central corneal thickness (CCT).

Enrollment: 96 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• The presence of a senile cataract with equivalent grades and history of visual acuity regression
• Informed written consent

Exclusion criteria

• Patients with total white cataract
• With history of ocular surgery and other eye diseases (corneal pathology, uveitis, glaucoma)
• With systemic diseases with the potential to affect vision

Trial design

96 participants in 2 patient groups

Subluxation

Description:

Nucleus is hydrodissected until it lilts above the capsular bag, rotated to face the incision then tumbled and emulsification continues from the opposite equator outside in until complete

Treatment:

Procedure: Subluxation

Divide and Conquer

Description:

Cataract nucleus is fragmented into 4 pieces then aspirated by ultrasonic vibration

Treatment:

Procedure: Divide and conquer