Outcomes of Resident-Performed Laser-Assisted vs Manual Traditional Phacoemulsification
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 148
- 试验地点
- 2
- 主要终点
- Complication rates
研究概览
简要总结
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-supervised residents at Parkland Memorial Hospital. This study aims to examine visual acuity and complication rates in femtosecond laser-assisted cataract surgery compared to traditional manual phacoemulsification cataract surgery for the beginning surgeon. In addition, this study will assess the subjective novice surgeon experience and the patient experience in terms of expectations and results.
详细描述
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-supervised residents at Parkland Memorial Hospital. Cataract surgery training is a standard requirement of all ophthalmology residents who are part of this clinical study.
Each resident must be a post graduate year 4 (PGY-4) level resident before being asked to be a part of this clinical study. Typically, each resident will have completed approximately 30 cataract surgeries by their PGY-3 residency year of training. These traditional phacoemulsification require manual capsulorrhexis creation with which residents will have experience prior to study participation. Other critical manual surgical steps of traditional and femtosecond-laser assisted cataract surgery require similar surgical skill sets, thus residents should have surgical skills applicable to both techniques prior to study involvement.
In addition to performing 30 traditional phacoemulsification surgeries, residents also will have assisted with femtosecond laser-assisted cases during their PGY-3 training year training at the Dallas VA medical center and with staff at University of Texas (UT) Southwestern Medical Center during their cornea rotation. The femtosecond-assisted cases completed by each resident in the study at Parkland will be the Alcon Certification cases for each resident. Performing femtosecond-laser assisted cases at this level of training will provide objective insights into this new surgical technique in resident hands. Patients will not be subjected to any additional risk due to participation in this study as femtosecond laser Alcon Certification is already being performed by residents as part of their standard UT Southwestern ophthalmology training.
Patient eyes that meet the inclusion and exclusion criteria below will be randomly assigned to either the laser-assisted or the standard manual phacoemulsification group based. Following surgery, patients will return for post-operative visits at post-op day 1, post-op week 1, post-op month 1, and post-op month 3. Subjects will be followed in the Parkland Surgery Chief clinic. Subjects will not necessarily see the same study surgeon during each post-operative visit period. It should be noted this is the standard procedure as currently practiced in the Parkland ophthalmology clinic.
Verification of subject adherence to the post-operative follow-up visit schedule will be overseen by the PI throughout the course of the project. Weekly communication with sub-investigators will take place in order to review any outstanding concerns including recruitment effort, surgery schedules, and post-operative visit timelines. Arrangements for additional visits will also be reviewed and scheduled if medically necessary depending on individual patients' post-operative clinical course. Patients will be assigned to each group during the period of September 2015 through July 2016 and followed as part of the study for 3 months post-operatively.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 年龄范围
- 21 Years 至 99 Years(Adult, Older Adult)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Referred for cataract surgery at Parkland Memorial Hospital
- •Potential post-operative visual acuity of 20/30 or greater determined by potential acuity meter (PAM) testing or modified super pinhole potential acuity of 20/30 or greater
- •Clear intraocular media other than cataract in study eye(s)
- •Subject eyes will have a dilated pupil diameter of at least 6 mm
- •Subject eyes will lack other pre-existing ocular pathology or condition that may confound treatment effects, including diabetic retinopathy, previous retinal detachment, iris neovascularization, amblyopia, optic nerve atrophy or recurrent severe anterior or posterior segment inflammation of unknown etiology.
排除标准
- •Severe corneal diseases or prior corneal surgery
- •Active, significant external ocular or eyelid disease
- •History of lens abnormalities including posterior polar cataract and zonular weakness precluding standard non-complex cataract surgery
- •Retinal or posterior segment disease
- •Advanced glaucoma, white or advanced cataract (precluding adequate examination of the posterior pole)
- •Anatomic conditions that prevent placement of the femtosecond laser docking ring
- •Corneal opacity that will interfere with the laser beam (hazy cornea)
- •Presence of blood or materials in the anterior chamber
- •Hypotony, advanced glaucoma, or presence of cornea implant
- •Poor dilating pupil such that the iris is not peripheral to the intended diameter for the capsulotomy
- •Condition which would cause inadequate clearance between the intended capsulotomy depth and the corneal endothelium
- •Any contraindication to cataract or kerato-refractive surgery
- •Contact lens wearers must discontinue the use of contacts for an appropriate period of time to ensure that their corneas are stable before screening measurements are performed. For rigid gas permeable (RGP) lenses, it is at least 2-4 weeks before accurate imaging measurements can be performed. Study doctor will assess patient findings and determine how long RGP lens wear must be discontinued prior to surgery. For soft contact lenses, it is at least 3 days prior to study measurements.
结局指标
主要结局
Complication rates
时间窗: Operative visit to last post-op visit at 3 mos
Complication and adverse event monitoring will occur at each visit: pre-operative, operative, post-op day 1, post-op day 7-14, post-op day 30-60 and 3 mos post-op
Visual Acuity
时间窗: Change between baseline and 3 mos post-op.
Bilateral best spectacle corrected visual acuity
次要结局
- Patient benefit perception(3 mos post-op)
- Corneal Endothelial Cell Count (ECC)(Change from baseline to post-op day 30-60)
- Lens removal time(Operative visit)
