| 摘要 |
<p>An optometric apparatus comprises: a pair of right and left lens chamber units (60), each unit including a test window (61) and optical elements (65) to be selectively disposed in the test window; a convergence unit (40) which converges the right and left lens chamber units; an input unit (31) with which a pupillary distance (d) of an examinee is inputted; a calculation unit (70) which determines a convergence angle (&thetas;2) of the right and left lens chamber units based on a distance for a near vision examination at which a near vision optotype (3a) is presented and the inputted pupillary distance, the convergence angle for the inputted pupillary distance longer than a predetermined reference distance being determined such that an optical axis of the optical element is substantially aligned with a visual axis of an examinee's eye (E), whereas the convergence angle for the inputted pupillary distance shorter than the reference distance being determined such that the right and left lens chamber units are converged without coming into contact with each other; and a control unit (70) which controls driving of the convergence unit based on the determined convergence angle. <IMAGE></p> |
