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December 1979

Arachnoidal Cyst Invading the Orbit

Author Affiliations

From the Department of Ophthalmology, Jules Stein Eye Institute, UCLA School of Medicine, Los Angeles. Dr Krohel is now with the Department of Ophthalmology, Albany (NY) Medical College.

Arch Ophthalmol. 1979;97(12):2342-2344. doi:10.1001/archopht.1979.01020020558012

• Ipsilateral glaucoma developed in a 51-year-old man with a left-sided temporal lobe arachnoidal cyst. Ultrasonic examination disclosed a cystic orbital lesion adjacent to the optic nerve. Following intracranial decompensation of the arachnoidal cyst, the intraocular pressure dropped markedly. Ultrasonography showed a collapse of the presumed optic nerve sheath cyst. While the exact mechanism producing glaucoma in this patient remains unclear, there was an apparent relationship between the elevated intraocular pressure and the arachnoidal cyst.