Obtain the widest field of view in the slit lamp lens range, referred to as the 3^rd generation 90D. The Digital Wide Field allows crystal clear views spanning from the central retina to the peripheral retina, even through undilated pupils. This lens provides 40% more field of view while maintaining the same magnification that you are used to with the classic 90D. The superior optical coating and high index glass ensure bright, distortion free imaging.