<span class="searchmatch">isoptics</span> plural of <span class="searchmatch">isoptic</span>...
English Wikipedia has an article on: <span class="searchmatch">isoptic</span> Wikipedia <span class="searchmatch">isoptic</span> (plural <span class="searchmatch">isoptics</span>) (geometry) The set of points for which two tangents of a given curve meet...
the study and treatment of muscular irregularities of the eye. orthoptic (plural orthoptics) (geometry) The <span class="searchmatch">isoptic</span> whose given angle is a right angle....