Personal computer-form glasses i.e. reading glasses, have single-strength lenses whose diopter strength is adjusted to middle range, where lenses and frame are aligned upwardly for enabling free sight on close-up range

摘要

The form glasses have single-strength lenses whose diopter strength is adjusted to a middle range. The lenses and a frame are aligned upwardly for enabling free sight on a close-up range. The frame is adjusted in such a manner that the lenses are locked at an upper area.