Eyeglasses ('Merganser')

Like most other "glass" in 'Merganser,' the lenses of eyeglasses are usually made of gelatin. The gelatin cannot be moved or smudged by human strength; it is held in place by several nodes at the edges of the eyeglass frames. The density of the gelatin is controlled by a notch on the side, which a magical modification device can be attached to. Different sectors of the "glass" can have different densities, which means bifocals and trifocals can be produced from the same "glass" as plain glasses. The gelatin can be drained into pits, where the lens frames meet the goggle straps.