by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Dry Eye A condition that occurs when the tear gland (See lacrimal gland this section) produces less tears creating a dry eye surface. (For more information, please see
by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Pupil The opening created by the iris through which light passes on to the retina. Unlike what is generally believed, this structure only regulates the amount of light entering the eye and does not actually “focus,” although depth of field is affected by...
by daniel | Nov 16, 2016 | Glasses Terminology
Vertex Distance The distance between a corrective lens and the cornea. An important measurement with moderate to high refractive errors since the final power of a glasses lens or contact lens will depend upon its distance from the retina.
by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Glaucoma A disease process that causes deterioration to the optic nerve fibers resulting in visual loss. The causes of glaucoma are numerous, most commonly due to elevated fluid pressure inside the eye. Damage that occurs due to sudden rise of pressure is known as...
