Corneal Edema After Phacoemulsification

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

Detailed Description
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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).

Official Title
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Central Corneal Thickness Assessment After Phacoemulsification: Subluxation Versus Divide-and-Conquer

Conditions
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Cataract

Intervention / Treatment
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* Procedure: Subluxation
* Procedure: Divide and conquer


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Subluxation<br>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 | Procedure: Subluxation<br>* One pole of The nucleus is hydrodissected until it lilts above the capsular bag. The tilted nucleus is rotated to face the incision and remaining half nucleus is then tumbled and emulsification continues from the opposite equator outside in until complete.<br>|
| Divide and Conquer<br>Cataract nucleus is fragmented into 4 pieces then aspirated by ultrasonic vibration | Procedure: Divide and conquer<br>* Cataract nucleus is fragmented into 4 pieces then aspirated by ultrasonic vibration<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Corneal edema preoperative | Central corneal thickness measurements were taken preoperatively | Day 1 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Corneal edema postoperative | Central corneal thickness measurements were taken postoperative day 4 | Day 4 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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subluxation, Divide and conquer