A dumbbell including a tubular handle with a thread on the inside surface of the tube. Disclosed is a method of manufacturing an electrostatic charge image developing toner, possessing the step of washing toner mother particles having been formed in an aqueous medium with washing water, wherein the washing water has a total dissolution component amount of at least 0. The base stripes are spaced by about 0. In one design, the ACK information may have a variable size, and the base station may perform detection for the ACK information based on different block codes for the first and second hypotheses. In some embodiments, the three-dimensional data may be enhanced or replaced with aberrometric data associated with the optical path of the eye.