Most people are familiar with reading the lines of progressively smaller letters projected onto a screen in the eye doctor's office. The Snellen chart is by far the most likely to be employed in places using the Roman alphabet. It actually only uses a few...
When you look at an optical illusion, something is obviously out of whack. Why won't your eyes cooperate? What's happening? Are your eyes playing tricks on you? Many readers will remember the emergence of Magic Eye books in the early 1990's. Countless hours were spent staring...
The pupil of the eye is an aperture (hole) in the iris that limits a light-bearing image coming through on its way to being focused on the retina. It typically bounces back and forth between a slight constriction and slight dilation (called "hippus"). The iris (the...
There is no single "best intraocular lens," whether single vision, toric, or presbyopia-correcting. All IOLs vary in optical performance, with incremental improvements over time from advances in technology. What is the "best" IOL for a particular individual often depends on the particularities of that patient's ocular anatomy,...
No. But there are indeed many connections between the eye and our hair & fingernails. The cornea of the eye is made of something almost identical to the keratin that is the basic "stuff" of hair and fingernails. In fact, the "k" in LASIK stands for...
