If you've been curious about syntonic light therapy — also called optometric phototherapy — you're in good company. More optometrists and vision therapists are bringing this light-based modality into their practices every year, and for good reason: the equipment footprint is small, much of the treatment happens at home, and it slots naturally alongside the vision therapy programs many practices already offer. This guide walks through what you actually need to get started: the

Learning how to choose syntonic filters is not about picking a colour from a chart. It is about reading a patient, deciding what their visual system needs right now, and matching that decision to a filter or a filter pair. This guide covers what a filter does, why practitioners work in pairs, how the 13-filter system is organised, the pairs that come up most often, and how to build a useful starter set. Scope note: Syntonic phototherapy is a professional modality. Filter sele

Vision is much more than seeing clearly straight ahead. Every day, we rely on our entire field of vision to navigate our surroundings, drive safely, read efficiently, and maintain balance. Visual field charting is a valuable assessment tool that helps measure how well a person sees in all areas of their visual field—not just what is directly in front of them. What Is Visual Field Charting? Visual field charting, also known as visual field testing or perimetry, is a method use