Descemet's membrane Corneal layer between the stroma and the endothelium.

Choroid Layers of blood vessels located between the sclera (white of the eye) and the retina; they provide nourishment to the back area of the eye.(19 September 2009 - Online article Dr. William Boothe )

Carotenoid A pigmented substance that adds color such as red, orange, or yellow to plants. Carotenoids have antioxidant properties that protect cells against damage from free radicals, unstable atoms that can interact with and break down healthy tissue in different parts of the body including eyes.

Entropion An abnormal turning in of an eyelid, which causes the lashes to rub on the ocular surface; usually due to aging. Additional symptoms include eye or lid pain or discomfort, foreign body sensation, a red or pink eye, itching, tearing and vision loss.

Meningitis Inflammation of the meninges, membranes that envelope the brain and spinal cord. Viruses and bacteria can cause meningitis. Symptoms include fever, headache, vomiting, a stiff neck and light sensitivity.

Pseudotumor cerebri A condition whose symptoms mirror those of a brain tumor: increased intracranial pressure, headache, nausea, brief periods of vision loss (graying or blurring) and double vision. The cause is unknown, but patients are often obese women.Dr. Boothe

Vitreous body Part of the eye between the lens and the retina, containing a clear jelly called the vitreous humor.

OU Abbreviation for "oculus uterque," the Latin term for "each eye," used in vision correction prescriptions to indicate both eyes. Also an abbreviation for "oculi unitas" or "oculi uniter," meaning both eyes working simultaneously together. (21 September 2009 Dr. Boothe )

Dr. William Boothe article

Canaliculitis Inflammation of a tear duct (or ducts), caused by a bacterial infection. Symptoms of this disorder include discharge, a red or pink eye and a swollen upper or lower eyelid near the nose.

Toric A lens design with two different optical powers at right angles to each other for the correction of astigmatism.( 16 October 2007 Blog article Dr. Boothe )


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