None listed
Conditions
Brief summary
The study seeks to compare the stability and visual outcomes of patients recieiving 2 commonly used brands of toric intraocular lens implant (TIOL) used to correct corneal based astigmatism at the time of cataract surgery. Accuracy of implantation as well as post operative stability and effectivity of astigmatic correction will be assessed.
Interventions
Standard cataract surgery was performed through a 2.75mm temporal section with 2 limbal based parancentsis at ninety degrees to the main section. The cataract was removed utilising an intact continuous curvilinear capsulorexhsis and phacemulusification of the lens and a divide and conquer technique. The toric intraocular lens implant (TIOL) (eithe Zeiss or Rayner) was inserted to correct the defocus from the cataractous lens extraction and dialed into the correct orientation to neutralise the co
Standard cataract surgery was performed through a 2.75mm temporal section with 2 limbal based parancentsis at ninety degrees to the main section. The cataract was removed utilising an intact continuous curvilinear capsulorexhsis and phacemulusification of the lens and a divide and conquer technique. The toric intraocular lens implant (TIOL) (eithe Zeiss or Rayner) was inserted to correct the defocus from the cataractous lens extraction and dialed into the correct orientation to neutralise the corneal based astigmatsm. The procedure takes about 40 minutes.
Sponsors
Mater Adults Public hospital
Study design
Allocation
Randomised controlled trial
Intervention model
Crossover
Primary purpose
Treatment
Masking
Blinded (masking used)
Eligibility
Sex/Gender
All
Age
18 Years to 110 Years
Healthy volunteers
No
Inclusion criteria
Bilateral cataracts at trial entry Age >18 No ocular co-morbidityPatients listed for cataract surgery. The median corneal based astigmatism value of 3 IOL master based readings with less than 1.0 dioptre variation in astigmatism An intact continuous curvilinear capsulorehxsis (CCC) at surgery
Exclusion criteria
The existence of other corneal disease or scarring Failure to achieve repeatable keratometry. Specically a difference of >1.0D astigmatism over 3 readings Phacodonesis noted preoperatively The presence of zonnular dehiscence or capsular bag disruption noted at surgery. Paitents not willing to attend for follow up for the duration of the study.
Outcome results
None listed