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Iris (anatomy) print that page


The iris (plural: irides , or rarely, irises) is a thin, circular structure in the eye , responsible for controlling the diameter and size of the pupils and thus the amount of light reaching the retina . "Eye color" is the color of the iris , which can be green, blue, or brown. In some cases

Sclera print that page

color of the human sclera, which many other species share, but also to the fact that the human iris is relatively small and comprises a significantly smaller portion of the exposed eye surface compared to other animals. It is theorized that this adaptation evolved because of our social nature

wikipedia.org | 2011/9/10 7:28:05

Corneal transplantation print that page


as well as scarring due to keratitis and trauma . Tectonic/reconstructive: To preserve corneal anatomy and integrity in patients with stromal thinning and descemetoceles , or to reconstruct the anatomy of the eye, e.g. after corneal perforation . Therapeutic: To remove inflamed corneal

Herophilos print that page

medieval times only few insights were added. Dissecting with the purpose to gain knowledge about human anatomy started again in early modern times (Vesalius), more than 1600 years after Herophilos' death. [ edit ] Medicine Herophilus is thought to be one of the founders of the scientific

wikipedia.org | 2011/9/28 16:04:11

Effects of Long-Term Contact Lens Wear on the Cornea print that page


The cornea is the clear, outermost layer of the eye that overlays the anterior chamber , iris , and pupil . It functions primarily as (1) a protective barrier to the rest of the eye by shielding against dust, bacteria, and other foreign agents, and (2) an exterior lens that helps focus entering

Equine vision print that page


discover why the animal behaves the way he does in various situations. Contents 1 The anatomy of the equine eye 1.1 The eyeball 1.1.1 Eye color 1.2 The adnexa 2 Visual capacity of the horse 2.1 Visual field 2.2 Visual acuity and sensitivity to motion 2.3 Color

Mammalian eye print that page

also known as the tunica vasculosa oculi , is the middle vascularized layer which includes the iris , ciliary body , and choroid . [ 4 ] [ 6 ] [ 7 ] The choroid contains blood vessels that supply the retinal cells with necessary oxygen and remove the waste products of respiration . The

wikipedia.org | 2010/9/25 9:20:35

Ciliary processes print that page

are received between corresponding foldings of the suspensory ligament of the lens . [ edit ] Anatomy They are arranged in a circle, and form a sort of frill behind the iris , around the margin of the lens . They vary from sixty to eighty in number, lie side by side, and may be divided

wikipedia.org | 2010/9/25 12:27:07

Ophthalmology print that page


differences from human practice are surprisingly minor and are related mainly to differences in anatomy or prevalence, not differences in disease processes. However, veterinary medicine is regulated separately in many countries and states/provinces resulting in few ophthalmologists treating

Iris sphincter muscle print that page


The iris sphincter muscle ( pupillary sphincter , circular muscle of iris , circular fibers ) is a muscle in the part of the eye called the iris . It encircles the eye, appropriate to its function as a constrictor. Contents 1 Comparative Anatomy 2 General Structure 3 Mode