Fitting the Prisms
Before fitting the prisms, it's important to have a good idea of the patient's visual field. The standard fitting of the peripheral prisms is based on a typical homonymous hemianopsia, where the field is missing directly down the center.
If the field is different than the typical homonymous hemianopsia, that doesn't mean peripheral prisms won't work. It simply means you should re-evaluate the locations of the prisms in relation to the visual field.
The video outlines the full fitting and training protocol. For something to better use as a reference, download our complete fitting guide here.
Don't Wear Them All the Time!
Much like sunglasses or reading glasses, the Peli Lens is designed to only be worn when needed. The Peli Lens should only be worn for mobility. When fitting the patient, put the prisms on a fitover, or an old pair of glasses. If it is fit on their primary pair of glasses, it can be an unwelcome distraction while watching TV or reading.