Defining Sharpness

Topics Covered: Defining sharpness Visual Acuity The Snellen Chart Dr. Optoglass opened a drawer, and removed a scalpel. “Okay, Bob. How sharp is this knife?” Bob examines the scalpel. “Pretty sharp.” “Would you say it is sharp enough to cut your finger?” “Sure.” “I’ve got a quotation for you:” I believe there’s nothing more disturbing […]