What is a myoflange designed to prevent in contact lens fitting?

A myoflange is an important component in contact lens fitting, particularly in certain types of lens designs that are meant to achieve improved stability and comfort. Its primary purpose is to prevent lens displacement, which can occur due to factors such as blink movements or changes in the position of the eyelid during eye activity.

By providing a mechanical barrier or support, a myoflange helps to keep the lens securely positioned on the eye's surface, ensuring that it remains in the optimal location for vision correction. This is especially crucial for patients who may be more active or have specific anatomical characteristics that could lead to unwanted lens movement.

While other factors like lens rotation, dryness, and lid interaction may affect overall comfort and stability, the primary function of a myoflange centers around preventing the lens from shifting out of place, thus maintaining visual acuity and comfort throughout the wearing period.