The pinhole is well-known to the practitioner to determine the potential vision of a patient without having to perform a refraction. A 1.2-mm pinhole is typical because you can achieve 20/20 vision ...

Make Magazine's blog post headline "$0 digital pinhole camera" sounded too good to be true, and guess what? It is! Poster Jason Striegel acknowledges that he "stretched the $0 part a bit" but even ...

Although presbyopia is an inevitable part of the aging process, its adverse impact on individuals’ activities of daily living seems to be more prevalent today than ever before. This is due in large ...