by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Cornea A clear membrane that lies in front of the iris (colored part of the eye) and pupil. It is commonly referred to as the “front of the eye.” It is literally the window to the eye and has tremedous focusing power for the eye. It determines 80% of the...
by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Presbyopia A universal aging process that occurs in all people regardless of whether or not glasses were necessary as a child or during young adulthood. This is a loss of the ability to focus on near objects. It generally becomes evident during the 40’s and will...
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 | Common Definitions in Eye Care
Farsightedness (Hyeropia) An optical error in which the eye sees better at a distance than near without correction. (See Refractive Disorders for more details.) Individuals may not recognize any sense of blurred vision at near depending upon their age and degree of...
by daniel | Nov 16, 2016 | Common Definitions in Eye Care
Retina The inner lining of the eye containing millions of nerve cells, and is often compared to the film inside of a camera. The retina actually does not “see” but is an electrically sensitive membrane which pick up light rays entering the eye, processes...
