Study to compare two different method of laser cataract surgery to avoid any glasses in future for distance vision.
- Conditions
- Health Condition 1: null- Healthy individuals with cataract and astigmatism.
- Registration Number
- CTRI/2015/07/006003
- Lead Sponsor
- ethradhama Superspeciality Eye Hospital
- Brief Summary
Not available
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- Open to Recruitment
- Sex
- Not specified
- Target Recruitment
- 50
•A patient with cataract for which phacoemulsification extraction and a posterior chamber IOL implantation has been planned
•Male or female in good general health, 18 years of age or older at the time of the pre-operative examination
•A patient has the visual potential of 20/25 or better in each eye after cataract removal and IOL implantation
•A patient with preoperative corneal astigmatism of between 0.75D and 1.5D
•A patient with no more than 1D difference in the amount of corneal astigmatism in each eye
•A patient with clear ocular media other than cataract in each eye
•A patient with normal OCT of the macula in each eye
•A patient with a known pathology that may affect visual acuity (as determined by the Investigator); particularly retinal changes that affect vision (macular degeneration, cystoid macular edema, proliferative diabetic retinopathy, etc.) in either eye
•A patient with amblyopia or strabismus
•A patient with capsule or zonular abnormalities that may affect postoperative centration or tilt of the lens (e.g. pseudoexfoliation syndrome) in either eye
•A patient with visually significant Epithelial Basement Membrane Dystrophy on slit-lamp exam in either eye
•A patient with evidence of Keratoconus or significant irregular astigmatism on pre-operative topography in either eye
•A patient has a history of significant ocular trauma or prior ocular surgery in either eye
•A patient that may or is expected to undergo surgical intervention and/or ocular laser treatment prior to or during the study period in either eye
•A patient that had refractive surgery (LASIK, LASEK, RK, PRK, etc.) prior to cataract surgery in either eye
•A patient that has been wearing PMMA lenses within 6 months, gas permeable lenses within one month, or extended-wear or daily soft contact lens within 7 days of their scheduled surgery
•A patient that requires the use of systemic or ocular medications that may affect vision
•A patient with any uncontrolled systemic disease. A potential patient in whom therapy for a systemic disease is not yet stabilized will not be considered for entry into the study
•A patient currently participating or has participated within 30 days prior to thestart of this study in a drug or other investigational research study.
Study & Design
- Study Type
- Interventional
- Study Design
- Not specified
- Primary Outcome Measures
Name Time Method Residual astigmatism after surgery.Timepoint: Day 1, 15 and 3 month after surgery.
- Secondary Outcome Measures
Name Time Method Change in aberrations and corneal topography.Timepoint: Day 1, 15 and 3 month after surgery.