Twenty eyes with an aphakic flat anterior chamber syndrome were identified among the complications of 8,533 cataract surgeries. This syndrome of "aphakic pupillary-block flat anterior chamber treatable by anterior vitriotomy" consisted of (1) flat and shallow anterior chamber; (2) vitreous pupillary and iridectomy block; (3) fixed pupil; (4) lack of response to topically applied mydriatics, acetazolamide, or osmotic agents; (5) transient increase in intraocular pressure to levels of 20 mm Hg or higher; (6) lack of deepening of the anterior chamber after iridectomy, iridotomies, reformation of the anterior chamber with saline or air, or vitreous aspirations; (7) immediate deepening of the anterior chamber following anterior vitriotomy.
Cotlier E, Herman S. Aphakic Flat Anterior Chamber: Treatment by Anterior Vitriotomy. Arch Ophthalmol. 1971;86(5):506–516. doi:10.1001/archopht.1971.01000010508005
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