American Century Companies Inc. boosted its stake in shares of The Cooper Companies, Inc. (NASDAQ:COO – Free Report) by 0.9% in the fourth quarter, HoldingsChannel.com reports. The fund owned 45,210 ...
A computer-adaptive testing tool with automated scoring reliably evaluates multifocal contact lenses in individuals with presbyopia.
Extended depth of focus contact lenses improved near to intermediate vision while maintaining far vision, leading to higher satisfaction in individuals with presbyopia, according to a study.
\(power \ of \ a \ lens \ (D) = \frac{1}{focal \ length \ (m)}\) A lens has a power of -3.33 dioptres. Calculate the focal length and state what type of lens it is.