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Benchmarks for outcome indicators in cataract surgery established
Ophthalmology. 2011;118(11):2105-2112.
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Researchers proposed benchmark levels for selected outcome indicators for cataract surgery in a prospective, multicenter cohort study.
The study included 1,685 patients with uncomplicated age-related cataracts who underwent unilateral phacoemulsification at seven sites from January 2007 through August 2008 and implantation with an SN60AT IOL (Alcon). Biometry was performed with the IOLMaster (Carl Zeiss Meditec).
Benchmarks for two potential outcome indicators were evaluated at 1 and 3 months after surgery. The outcome indicators were a maximum absolute deviation of 0.5 D from target refraction, which was achieved in 80% of the cases, and postoperative best corrected visual acuity of 0.8 or more, which was reached in 87% of the cases.
"The findings of this cohort study do not resolve the issue of how valid benchmarks for outcome indicators should be derived. However, they can contribute to the discussion regarding how valid benchmarks should be derived and the evolving assessment values for cataract surgery," the researchers wrote.