Adhesions of the Eye’s Iris and Swelling of Eye in Cats

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Iris Bombe – Complete Posterior Synechiae in Cat

Synechiae are adhesions between the iris and other structures in the eye, either the cornea or lens. Iris bombe occurs when there is a complete adhesion between the cat’s iris and the capsule of the lens of the eye, creating a 360 degree area of adhesion. This degree of adhesion results in a billowing of the iris forward into the eye.

Symptoms and Types

Symptoms seen with iris bombe include:

  • Eye bulging
  • Eye pain
  • Red eyes
  • Squinting
  • Corneal lesions, such as ulcers
  • Excessive tearing and discharge
  • Glaucoma
  • Variation in the color of the iris
  • Opacity of the lens
  • Uveitis
  • Decreased papillary reaction to light


  • Cat fight injury
  • Chronic infection
  • Corneal ulcer
  • Foreign body injury to the eye
  • Hyphema (bleeding in the front part of the eye)
  • Penetrating wounds to the eye
  • Surgery


Diagnosis is based on an ophthalmic examination, which involves examining the structures of the eye. Tonometry may be performed to measure the intraocular pressure (the pressure within the eyeball).

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A type of light device that transfers a bright beam; this is used for many medical purposes


Anything having to do with the eye or care of the eye


The colored layer around the pupil


Found inside the eye


A disorder that has resulted from intraocular pressure


Fibers that bond items together that would not normally be combined.

Courtesy of Original Article