• Measurement of the Whole Crystalline Lens Circumference and Posterior Chamber Dimensions by VHF Ultrasound: Possible Applications in Refractive Surgery Description: Dan Z. Reinstein, MD MA(Cantab) FRCSC DABO FRCOphth FEBO, (United Kingdom), presents a method of posterior chamber imaging and defining the zonular plane using VHF Ultrasound to improve haptics and ICL sizing. Subspecialty: Refractive Management / Intervention Level: Intermediate Uploaded By: ISRS Multimedia Library