What does the fitting triangle represent?

The fitting triangle is a crucial concept in the field of ophthalmic dispensing, as it represents the main supporting points for eyewear. Understanding this triangle allows opticians to ensure that glasses fit well on a patient’s face, promoting both comfort and effectiveness in vision correction.

The fitting triangle consists of three key points that are critical for achieving a stable and balanced frame fit: the nasal bridge, the temporal or side of the head where the temples attach, and the point behind the ears. These points are strategically positioned, forming a triangle that should ideally be balanced to distribute weight evenly across the face. When the eyewear is well-aligned with this triangle, it helps maintain the correct optical alignment and minimizes the likelihood of discomfort or slipping.

By focusing on these main supporting points, the fitting triangle aids in determining how to adjust the frame for an optimal fit, leading to better functional performance of the eyewear and enhanced visual comfort for the wearer. This is essential in achieving the desired aesthetics and ensuring that the corrective lenses are positioned accurately in relation to the visual axis.