accommodative facility(redirected from accommodative rock)
Ability of the eye/s to focus on stimuli at various distances and in different sequences in a given period of time. Clinically, this is measured either monocularly or binocularly, usually by having the subject fixate a small target alternately through plus and minus lenses, which are interchanged as soon as the target appears clear. The operation is repeated many times and the results are commonly presented in cycles per minute (one cycle indicates that both plus and minus lenses have been cleared). Syn. accommodative rock. See accommodative insufficiency; lens flippers.