To relieve tension on both ears, what adjustment should be made?

To relieve tension on both ears, increasing the temple length-to-bend is the appropriate adjustment because it allows the temples of the eyewear to sit more comfortably and securely on the head without exerting excessive pressure on the ears. When the temple length is increased appropriately, it helps distribute the weight of the frames more evenly across the head and prevents the temples from pulling tightly against the ears.

This adjustment is particularly beneficial for individuals who experience discomfort from their eyewear. An appropriate temple length ensures that the frames do not rest too far forward or backward, which can lead to additional stress on the ear regions. By adjusting the bends further away from the ear, the frames sit better, enhancing comfort and fit.

In contrast, options that involve shortening the temple length-to-bend or making adjustments to the pad splay angle would likely lead to increased tension on the ears, rather than alleviating it. Therefore, the increase in temple length-to-bend directly addresses the problem of discomfort created by the current fit.