The investigators found that the premature births to be associated with vascular changes on ocular coherence ...

The retina is an extremely complex structure. It's made up of at least 10 distinguishable layers, and is packed with more sensory nerve cells than anywhere else in the body. The retina is home to ...

The backbone of the book consists of the 16 chapters on eye anatomy and physiology, but these are leavened by a variety of devices to inform us of the eye's evolution, development and intellectual ...

Difficult, but not impossible. Scientists have come up with scenarios through which the first eye-like structure, a light-sensitive pigmented spot on the skin, could have gone through changes and ...

Structure Coloured part of the eye that contains muscles. These relax or contract to adjust the size of the pupil. Function Controls how much light enters the pupil. Structure Transparent ...

Light passes through the eyeball to the retina. There are two main types of light receptors called rods and cones. Rods are more sensitive to light than cones so they are useful for seeing in dim ...