Fig. 14 Taboparetic pupil. A. Pupils show bilateral mydriasis (5 mm and 7 mm) that is fixed to near effort (B) and to the bright focal beam of the slit lamp (C). When evaluating the pupillary reflex, testing errors can be introduced by using an insufficiently bright light source, using an inadequate accommodative target, or by failing to ensure the patient is exerting maximal accommodative effort. A wrist watch face provides a pragmatic stimulus for near effort.