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Clinical Research of Femtosecond Laser-Assisted Cataract Surgery

2015-07-10 08:53:23 | BioPortfolio

Summary

Since femtosecond laser was approved for cataract surgery by FDA in 2010, femtosecond laser assisted cataract surgery (FLACS) has demonstrated high precision of capsulotomy, reduced phacoemulsification power and time, and comparable refractive outcome in clinic.

It is still unknown whether there are toxic substances produced due to photochemical or high-energy physical effect of femtosecond laser during FLACS.

Description

Phacoemulsification is one of the main surgical procedures for cataract surgery owing to the advantages of small incisions and rapid recovery. However, the surgical outcome of phacoemulsification can be negatively affected due to the problem of accuracy and repeatability for capsulorhexis, and the corneal endothelial cell damage by ultrasound energy.To overcome those problems from the phacoemulsification, femtosecond laser-assisted cataract surgery (FLACS) had been used in the past few years and showed unique advantages.

The purpose of this study is to investigate the preliminary clinical outcomes of femtosecond laser-assisted cataract surgery.This prospective comparative study enrolled consecutive patients,will be randomly assigned to trial group underwent FLACS and control group underwent conventional cataract surgery.

The phacoemulsification time, energy, and complications during operation were recorded.

The anterior capsule and aqueous humor were collected. Morphology of the cutting edge and cells of anterior capsule was assessed by light microscopy. The proteins in the aqueous humor were identified by mass spectrometry . Electrolyte in the aqueous humor was detected by a chemistry analyzer. Postoperative refraction at 1 day, 1 week, 1 and 3 months, the capsulorhexis size and corneal endothelial density at 1 and 3 months were also measured.

Study Design

Allocation: Randomized, Intervention Model: Single Group Assignment, Masking: Single Blind (Investigator), Primary Purpose: Treatment

Conditions

Cataracts

Intervention

femtosecond laser-assisted cataract surgery, conventional phacoemulsification

Location

Eye Hispital of Wenzhou Medical University
Wenzhou
Zhejiang
China
325000

Status

Completed

Source

Wenzhou Medical University

Results (where available)

View Results

Links

Published on BioPortfolio: 2015-07-10T08:53:23-0400

Clinical Trials [3281 Associated Clinical Trials listed on BioPortfolio]

Subfoveal Choroidal Thickness After Surgery for Age-related Cataracts

To compare the effects of femtosecond laser-assisted cataract surgery (FLACS) and conventional phacoemulsification surgery (CPS) on subfoveal choroidal thickness (SFCT) in age-related cata...

Comparison of Clinical Outcomes in Ziemer Femtosecond Versus Conventional Phacoemulsification Surgery

This study is aimed to compare the clinical outcomes in Ziemer LDV Z8 femtosecond laser-assisted cataract surgery versus conventional phacoemulsification cataract surgery

Cataract Surgery in Indian Patients With or Without LenSx® Laser

The purpose of this study is to record and analyze the profile and outcome of cataract patients receiving phacoemulsification (phaco) and artificial intraocular lens (IOL) implantation wit...

Release of Proinflammatory Cytokines (IL-1β, IL-6) and Total-prostaglandin (PG) Following Femtosecond Laser-assisted Cataract Surgery Compared to Manual Cataract Surgery

Patients with bilateral age related cataract will be included in the study. Manual cataract surgery (MCS) will be performed in one eye and laser cataract surgery (LCS) in the corresponding...

Resident-Performed Laser-Assisted vs Manual Traditional Phacoemulsification Cataract Surgery

The study design will be a prospective study comparing laser-assisted cataract extraction cases and traditional manual phacoemulsification cases. All cases will be performed by faculty-sup...

PubMed Articles [16466 Associated PubMed Articles listed on BioPortfolio]

Preoperative intraocular pressure as a strong predictive factor for intraocular pressure rise during vacuum application in femtosecond laser-assisted cataract surgery.

To evaluate the effect of preoperative intraocular pressure (IOP) and the vacuum level on IOP during femtosecond laser-assisted cataract surgery.

Auckland Cataract Study IV: Practical application of NZCRS cataract risk stratification to reduce phacoemulsification complications.

Reduction of intraoperative complications in phacoemulsification cataract surgery.

Femtosecond Laser-Assisted Small Incision Sutureless Intrastromal Lamellar Keratoplasty (SILK) for Corneal Transplantation in Keratoconus.

To describe a femtosecond laser-assisted small incision sutureless intrastromal lamellar keratoplasty in an eye with severe keratoconus and report on the outcome with a 1-year follow-up.

Phacoemulsification Versus Phacotrabeculectomy in Primary Angle-closure Glaucoma With Cataract: Long-Term Clinical Outcomes.

Phacotrabeculectomy was more effective in reducing intraocular pressure (IOP) and glaucoma drugs than phacoemulsification alone in primary angle-closure glaucoma (PACG) eyes with cataract but was asso...

Effects of ultrasound energy on the porcine corneal endothelium - Establishment of a phacoemulsification damage model.

The purpose of this study was to establish a standardized in vitro phacoemulsification damage model for future investigations of the effects of phacoemulsification, surgical devices, protective ophtha...

Medical and Biotech [MESH] Definitions

A technique utilizing a laser coupled to a catheter which is used in the dilatation of occluded blood vessels. This includes laser thermal angioplasty where the laser energy heats up a metal tip, and direct laser angioplasty where the laser energy directly ablates the occlusion. One form of the latter approach uses an EXCIMER LASER which creates microscopically precise cuts without thermal injury. When laser angioplasty is performed in combination with balloon angioplasty it is called laser-assisted balloon angioplasty (ANGIOPLASTY, BALLOON, LASER-ASSISTED).

The making of a continuous circular tear in the anterior capsule during cataract surgery in order to allow expression or phacoemulsification of the nucleus of the lens. (Dorland, 28th ed)

Endoscopic surgical procedures performed with visualization via video transmission. When real-time video is combined interactively with prior CT scans or MRI images, this is called image-guided surgery (see SURGERY, COMPUTER-ASSISTED).

Techniques using laser energy in combination with a balloon catheter to perform angioplasty. These procedures can take several forms including: 1, laser fiber delivering the energy while the inflated balloon centers the fiber and occludes the blood flow; 2, balloon angioplasty immediately following laser angioplasty; or 3, laser energy transmitted through angioplasty balloons that contain an internal fiber.

A procedure for removal of the crystalline lens in cataract surgery in which an anterior capsulectomy is performed by means of a needle inserted through a small incision at the temporal limbus, allowing the lens contents to fall through the dilated pupil into the anterior chamber where they are broken up by the use of ultrasound and aspirated out of the eye through the incision. The small incision allows the surgeon to use very few or even no stitches to close the tiny wound. There is usually no need for hospitalization and patients may resume most activities within days. (Cline, et al., Dictionary of Visual Science, 4th ed & In Focus 1993;1(1):1)

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