Prism glasses, reclining glasses, telescope mirrors

With the help of prism glasses, reclining glasses or telescope mirrors, the field of vision is expanded or the angle of vision is changed.

In case of neck problems, the viewing angle can be changed up to 90 degrees, enabling reading in a lying position. However, they do not compensate for any visual defect, which is why it is still necessary to wear normal glasses. They do not compensate for visual defects, but merely widen the viewing angle.