Optical illusions that hide words and objects in plain sight are great for testing your visual acuity, attention to detail, ...

Only those with excellent observation skills can find the hidden koala among the pandas in this optical illusion image. Can ...

Please provide your email address to receive an email when new articles are posted on . Children had better near and distance visual acuity than adults before receiving visual aids. Optical aids were ...

Illusion is derived from the Latin verb illudere, which means to mock or trick. Our brains tend to fill in the gaps in ...

Optical illusions are mind-bending images that challenge your perception and test your observation skills. There are three types of optical illusions: literal, physiological, and cognitive. Optical ...

Visual acuity (VA) commonly refers to the clarity of vision, but technically rates an examinee's ability to recognize small details with precision. Visual acuity is dependent on optical and neural ...

Please provide your email address to receive an email when new articles are posted on . A study compared the optical and refractive performance of an enhanced monofocal IOL vs. an aberration-free ...