Comparison of Femtosecond Laser Assisted Cataract Surgery to Conventional Phacoemulsification Cataract Surgery

Comparison of Femtosecond Laser Assisted Cataract Surgery to Conventional Phacoemulsification Cataract Surgery on Corneal Endothelial Cell Loss

In this project, the investigators aim to compare the safety, efficacy, and predictability outcomes of conventional CEIOL surgery to Femtosecond-laser-assisted CEIOL (FLACS) in an effort to improve cataract surgery outcomes. The investigators hypothesis is that FLACS may lead to preservation of endothelial cells compared to conventional CE IOL.

Study Overview

• Status: Completed
• Conditions: Cataract

Detailed Description

This study will only include patients who are eligible to undergo cataract surgery. All patients will receive treatment that is FDA approved for cataract surgery. Because all study participants will have been scheduled for elective cataract extraction regardless of their participation in this study, there will be little or no additional surgical risk associated with participation. A total of 720 patients are expected to be enrolled in the study during a period of 2 years. The investigators will recruit patients with bilateral operable cataracts. One eye will undergo cataract surgery using conventional cataract extraction technique including phacoemulsification whereas the second eye will undergo FLACS. No significant increased risk to the patient is expected in either arm of the study compared to routine cataract surgery. The patients will be examined as per previous post-operative cataract surgery guidelines on POD1, POW1, POM1, POM3, POM6, POY1 and POY2. The only treatment difference will take place at the time of the cataract surgery. Post-operatively, endothelial cell count will be obtained by the no-touch technology of specular microscopy at baseline as well as three months after surgery. If the study ends prematurely, the investigators do not anticipate any significant change in the care of the patient.

• Study Type: Observational
• Enrollment (Actual): 154

Contacts and Locations

Study Locations

• United States
  • Maryland
    • Baltimore, Maryland, United States, 21044
      • Johns Hopkins University

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 90 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Patients who present to our center with visually significant cataract and who may benefit from cataract surgery

Description

Inclusion Criteria:

1. Patients older than 18 years of age
2. Ability to understand and sign an informed consent
3. Visually significant cataract eligible to undergo cataract extraction by phacoemulsification with primary intraocular lens implantation in at least 1 eye
4. Ability and commitment to follow up for 18 months after surgery
5. No other ocular pathology and no previous/concurrent surgery

Exclusion Criteria:

1. Any other ocular pathology that may affect best-corrected visual acuity
2. Previous or concurrent ocular surgery
3. Subjects who are pregnant, lactating, or planning to be pregnant during the course of the study.
4. Patients with keratoconus or keratectasia
5. Patients who are blind on one eye

Study Plan

How is the study designed?

Design Details

• Observational Models: Case-Control
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
conventional; Patients who undergo routine cataract surgery using conventional phacoemulsification technique
FLACS; Patients who undergo femtosecond laser assisted cataract surgery

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
endothelial cell density three months after conventional CEIOL or FLACS compared to baseline	endothelial cell density will be compared at baseline and three months after a patient undergoes FLACS or Conventional CE IOL to see which technique causes less endothelial cell loss.	up to 2 years

Collaborators and Investigators

• Sponsor: Johns Hopkins University
• Investigators: Principal Investigator: yassine daoud, md, Johns Hopkins University

Study record dates

Study Major Dates

• Study Start: May 1, 2014
• Primary Completion (Actual): November 1, 2018
• Study Completion (Actual): November 1, 2018

Study Registration Dates

• First Submitted: March 16, 2014
• First Submitted That Met QC Criteria: March 23, 2014
• First Posted (Estimate): March 26, 2014

Study Record Updates

• Last Update Posted (Actual): November 16, 2018
• Last Update Submitted That Met QC Criteria: November 15, 2018
• Last Verified: November 1, 2018

More Information

Terms related to this study

• Keywords: Cataract, femtosecond laser, FLACS
• Additional Relevant MeSH Terms: Eye Diseases; Lens Diseases; Cataract
• Other Study ID Numbers: NA_00089916