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Related Experiment Videos

Arachnoidal cyst invading the orbit.

G B Krohel, R S Hepler

    Archives of Ophthalmology (Chicago, Ill. : 1960)
    |December 1, 1979
    PubMed
    Summary
    This summary is machine-generated.

    A temporal lobe arachnoidal cyst was linked to glaucoma in a 51-year-old man. The patient’s intraocular pressure dropped after the cyst decompressed, suggesting a connection between the cyst and elevated eye pressure.

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    Area of Science:

    • Ophthalmology
    • Neurology
    • Neurosurgery

    Background:

    • Arachnoid cysts, particularly those near the optic nerve, can present with varied neurological and ophthalmological symptoms.
    • The relationship between intracranial lesions and secondary glaucoma is not fully understood but is often linked to pressure dynamics.

    Observation:

    • A 51-year-old male presented with ipsilateral glaucoma and a left-sided temporal lobe arachnoidal cyst.
    • Ultrasonic examination revealed a cystic orbital lesion adjacent to the optic nerve.
    • The patient experienced a significant decrease in intraocular pressure following intracranial decompensation of the arachnoidal cyst.

    Findings:

    • The arachnoid cyst decompensation correlated with a marked drop in intraocular pressure.
    • Ultrasonography demonstrated a collapse of a presumed optic nerve sheath cyst after the intracranial event.

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  • A direct causal link remains elusive, but a clear association between the arachnoid cyst and elevated intraocular pressure was observed.

    • Implications:

    • This case highlights a potential, albeit rare, mechanism linking intracranial arachnoid cysts to the development of secondary glaucoma.
    • Understanding pressure dynamics in the optic nerve sheath may be crucial for managing such cases.
    • Further investigation into the pathophysiology of cyst-induced glaucoma is warranted.