Partial rim reading glasses are available in various corrective lens powers or dioptre values. These quality reading glasses rectify refractive errors, bringing back clear images when performing close work.
Half rimmed glasses have arms that are spring hinged. The semi-rimless readers are reglazable with prescription lenses. This is attained by removing the plastic cord that holds the lenses in the half rim, cutting a grove in the replacement lenses to rehouse the cord and reinserting into the frame rim.