The circle and the shadow: 2 early postoperative findings

Negative dysphotopsia: Long-term study and possible explanation for transient symptoms

“…To explore this observation, a technique was developed in which the light source on the slitlamp was rotated back and forth from a temporal angle, allowing light to pass obliquely through the incision. 25 A remarkable finding was identified; that is, a shadow projected by the incision onto the iris (Figure 2, A). As the light source was moved more temporally, the straight shadow became curvilinear as it approached the pupil (Figure 2, B).…”