Strategic engaging members and variable ring stiffness manage membrane curvature, reducing optical distortion at high refractive powers.
A urethane acrylate polymerizable composition retains photochromic coloring performance after curing.
Zero-strain fluid lens configurations reduce actuation forces by maintaining stable elastic energy during profile adjustments.
Asymmetric peripheral zones maintain lens orientation to preserve the shadow effect despite rotational forces.
Selective wavelength transmission preserves circadian rhythm synchronization while blocking harmful UV radiation.
Segmented tinted lens areas in night-driving glasses reduce glare from oncoming headlights without compromising visibility of road safety features.
Contour lines in peripheral stabilization zones match target eyelid shapes to prevent rotation and preserve optical axis alignment.
A soft contact lens features a superior lenticular region that attaches to the upper eyelid to stabilize rotation and control movement.
Specifying an ultraviolet absorber with a Hazen color number of 40 or less suppresses yellowing and ensures YI value consistency in optical components.