Smart-Phone Digital Slit Lamp Adapter Covert Smart-phones into professional digital eyepices for your traditional optical instruments. Just attach the equipped Smart-phone to a slit-lamp, microscope, binocular, telescopes and more. Using a Android or Apple phone? No worries with its adjustable camera hole it Works with any phone. Features Captures Digital image and videos Fast and easy Installation Works on any Android or Apple Phone Holds 4” to 5.5” width Smart Phones Fits Eyepieces of 1 to 1.8 inches Diameter