A magnifying glass for magnifying a portable electronic device (e.g., PDA, or mobile phone) held by the hand is disclosed. In one embodiment the magnifying glass includes a spring-biased clamp adapted to fasten the thumb of either hand and having an extension; a light pivotably releasably secured to the extension; a pivotal member having one end pivotably secured to the extension; a hinge pivotably secured to the other end of the pivotal member; and two lenses each secured to the hinge. The number of lens is one with an elimination of the hinge and is pivotable clockwise or counterclockwise relative to the pivotal member in another embodiment. The single lens is slidable in a further embodiment.