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 ...

Please provide your email address to receive an email when new articles are posted on . Pinhole pupilloplasty has been documented to improve visual performance in cases with higher-order aberrations.

Researchers have used the centuries-old idea of pinhole imaging to create a high-performance mid-infrared imaging system without lenses. The new camera can capture extremely clear pictures over a ...