Mamalis and Spencer14 recently reported the results of a physician survey concerning the explantation of foldable IOLs. This survey reported that visual aberrations or optical phenomena were reported by 24% of patients with 3-piece monofocal silicone lenses, 27% of patients with 1-piece plate haptic silicone lenses, and 28% of patients with 3-piece acrylic lenses. A square edge is, therefore, not the only requirement for an IOL lens to produce photic phenomena. Tester et al15 conducted a telephone questionnaire to investigate the incidence of unwanted light images with different IOLs. They surveyed patients with 6 IOL types: AcrySof 5.5-mm(MA30) and 6.0-mm (MA60) IOLs, the Allergan SI-40 (Allergan, Inc, Irvine, Calif), the Staar/Chiron plate haptic lens (Staar Surgical Co, Monrovia, Calif, and Chiron Corporation, Emeryville, Calif), and 2 PMMA IOLs (5.5 mm and 6.0 mm) and compared them with 50 controls with presbyopia. Patients were contacted between 6 and 12 months after surgical treatment for cataract to identify whether they were experiencing glare phenomena. Those with symptoms were asked to describe the pattern, the light conditions under which they occurred, and the effect they had on vision. Interestingly, the rates of glare and sensitivity symptoms in patients with AcrySof or SI-40 IOLs were similar to those of the controls. However, patients with IOLs had more unwanted images than did controls. Patients with AcrySof and SI-40 IOLs reported the highest incidence of unwanted images (MA30, 30%; MA60, 35%; SI-40, 24%; compared with the control group, 4%). The SI-40 lenses have, in some cases, been successful in reducing photic symptoms after IOL exchange of an AcrySof lens. The authors could not explain the incidence of photic symptoms among patients with SI-40 IOLs in this survey. Similar rates of symptoms in the AcrySof and PMMA 5.5-mm and 6.0-mm optic IOL groups suggest that optic diameter is not particularly important in causing symptoms. Overall, this paper shows that light-induced symptoms are common in both patients with presbyopia and patients with pseudophakia. It is difficult to identify their precise cause, and it is uncommon for them to be bothersome.