The principle
One hole, and the eye focuses
This is the pinhole effect, familiar to photographers: the smaller the aperture, the sharper the image. Each hole in the grid lets through only the well-aligned rays.
The hole
It acts like an artificial pupil: it reduces the aperture, increases depth of field and removes stray rays. The image is sharper, both near and far. Each hole makes you work.
The grid
Honeycomb, 45-60° aperture, a concave-convex shape that follows the curve of the eye. Each opening has a carefully crafted internal geometry: less glare, less scattering.
The eye
Guided from hole to hole, it alternates directions and distances. Accommodation and convergence coordinate, the eye muscles work gently, like an exercise routine.