In today’s optical illusion challenge, viewers are asked to spot the hidden number "925" among rows of leopard-print 2s, 3s, ...

Engadget's experienced editorial team has tested and reviewed hundreds of digital cameras and photography gear over the past 20 years to help you find the best options available.

Scientists have for the first time looked deep into the protein structure that may determine our vision—and discovered that ...

Five years from the start of the COVID-19 pandemic, numerous academic studies have shown how the novel coronavirus affects ocular health.