Disclosed is an image capturing device having an irradiation unit, an image capturing unit, and a color representation setting unit. A position OCT device can be used to continually monitor the position of the front surface of the cornea, while a distance OCT device can determine the apparent distance between the front surface of the cornea and the front surface of the retina. The invention also provides compositions and methods of making compositions comprising radiolabeled antibodies andor peptides for imaging and treating tumors, including melanin-containing melanomas. The apparatus can further include an image sensor in the housing disposed to receive an image of the eye from the optical imaging system. A method of assembling a stringed instrument includes mounting a plate structure to a neck and fingerboard of the stringed instrument, where the plate includes an integrated rail, and mounting a headblock to an interior surface of a body of the stringed instrument, where the headblock has an integrated channel structure for receiving the integrated rail of the plate structure.