While the clinical importance of blue light–blocking intraocular lens (IOL) filters remains controversial, with the theoretical reduction in risk of age-related macular degeneration competing with potential impairment of scotopic visual performance,1,2 it is important to identify the presence of a colored IOL in various clinical situations.
Walker NJ, McKee HDR, Phelps GK. Use of Purkinje Images to Identify Colored Intraocular Lens Filters. Arch Ophthalmol. 2007;125(6):851. doi:10.1001/archopht.125.6.851