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Term Definition

A cloudy or opaque area in the normally clear lens of the eye.


To the tear drains (either laser or heat cautery): A procedure to permanently close the tear drainage holes. The procedure helps keep the limited volume of tears on the eye for a longer period of time.

Chronic Villus Sampling (CVS)

A test which is performed to identify a number of different genetic problems. This test is performed by using a thin tube which is guided through the cervix or by using a thin needle which is inserted into the uterus. The health care provider will then take a sample of chorionic villi from the placenta. The Chronic villi have the same genetic makeup as the baby and are responsible for transferring nutrients, oxygen and antibodies from mother to baby.

Cleft Lip

Defect in the fusion of the upper lip during prenatal development

Cleft Palate

Defect in the fusion of the roof of the mouth during prenatal development


Present at birth.


The clear, protective outer layer of the eye.

Corneal Abrasions

A cut or scratch on the cornea, the clear front cover of the eye.

Corneal scars

If the cornea becomes damaged through disease, infection, or injury, the resulting scars or discoloration can interfere with vision by blocking or distorting light as it enters the eye, also reducing vision.


Referring to the head and face