vision: Acuity of vision in response to light flash
Description
The acuity of vision for seven subjects was tested. The response is the lag
in milliseconds between a light flash and a response in the cortex of the
eye. Each eye is tested at four different powers of lens. An object at the
distance of the second number appears to be at distance of the first number.
Arguments
Format
A data frame with 56 observations on the following 4 variables.