PGCFA Knowledgebase
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Glossary

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  • narrow angle glaucoma
    An intermittent closure of the draining system of the eye that can cause high eye pressure.  This form of glaucoma is rarely seen in children.  See also angle closure glaucoma.
  • nasolacrimal duct
     The channel that allows tears to drain from the eye into the nose. 
  • needling
     Use of a needle to break up scar tissue that has caused trabeculectomy or glaucoma tube surgery to fail. 
  • neovascularization
     Growth of abnormal blood vessels. 
  • normal tension glaucoma
    Damage to the optic nerve that appears like glaucoma, but without high pressure in the eye.  This is a disorder only seen in adults. 
  • nystagmus
    A constant, rhythmic shaking of the eyes.