Dr. Colby answers the question: 'What Are Toric Contact Lenses?' Aug. 24, 2009— -- Question: What are toric contact lenses, when are they used and what are the risks/benefits of using them?

This survey involved analysis of a very large data set; as such, interpretation of the statistical results needs to be undertaken with care. Because statistical outcomes are related to sample size, ...

Over the 5-year survey period (2007–2011), the median country response rate was 1,345 fits (range, 59 fits in Nepal to 22,802 fits in Japan). Overall, data were collected in relation to 97,222 soft ...