What is the role of corneal indentation (CI) in the treatment of acute angle-closure glaucoma (AACG)?

Updated: Nov 19, 2018
  • Author: Joseph Freedman, MD; Chief Editor: Steven C Dronen, MD, FAAEM  more...
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When medical therapy proves to be ineffective, corneal indentation (CI) can be used as a temporizing measure to reduce IOP until definitive treatment is available. As the cornea is indented, aqueous humor is displaced to the periphery of the anterior chamber, which serves to temporarily open the angle. This leads to immediate reduction of IOP and occasionally may completely abort the attack. After applying topical anesthetic, any smooth instrument can be used to perform this procedure, including a gonioprism (ideal, if available), or a cotton-tipped applicator. Obviously, a concern with performing CI is the possibility for damage to the corneal epithelium, which may complicate the patient’s course. [19]

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