Why is frame alignment important in eyewear fitting?

Frame alignment is crucial in eyewear fitting primarily because it ensures that the lenses are positioned correctly for optimal vision correction. When the optical centers of the lenses align with the wearer's pupils, it allows for the most effective use of the prescription, which is vital for achieving clear and comfortable vision. Misalignment can lead to visual distortions, discomfort, and strain on the eyes, ultimately making the eyewear ineffective for its intended purpose.

In addition to providing proper vision correction, frame alignment can also contribute to comfort and aesthetic appeal. However, the primary function of proper alignment lies in its role in ensuring that the corrective lenses work as designed, allowing the wearer to experience the full benefits of their prescription. Thus, the importance of frame alignment is multifaceted, with correct positioning being the most fundamental aspect related to vision quality.