Abstract
Objective: This study was to explore whether the intracranial pressure (ICP) changes and intraocular pressure (IOP) changes are syn- chronized after brain surgery. We also want to see whether measurement of IOP could be used to monitor ICP. Materials and methods: We evaluated the correlation between intracranial pressure and intraocular pressure in 15 patients with menin- gioma admitted to our hospital. All patients required the intracranial pressure monitoring on clinical grounds. Intraocular pressures were measured by portable non-contact tonometer. We simultaneous recorded the intracranial pressure and intraocular pressure once a time per hour. Results: We found significant correlation between intraocular pressures and intracranial pressure in 60.0% (9/15) of the tested popula - tion. However, ICP and IOP showed significant correlation only in 4 (16.7%) out of 24 time points (P<0.05). Conclusions: Although there is a significant correlation between ICP and IOP in neurosurgical patients, changes in IOP cannot always reflect the dynamic changes in ICP.
Highlights
Intracranial pressure (ICP) measurement is used commonly in neurosurgery[1]
Conclusions: there is a significant correlation between ICP and intraocular pressure (IOP) in neurosurgical patients, changes in IOP cannot always reflect the dynamic changes in ICP
The interaction between ICP, which formed by cerebrospinal fluid, and IOP, which formed by aqueous humor, has its theoretical basis of anatomy
Summary
Intracranial pressure (ICP) measurement is used commonly in neurosurgery[1]. Direct measurement of cerebrospinal fluid pressure by intraventricular monitor is considered to be the “gold standard” of ICP measurement[2]. Attempts have been made to measure ICP by non-invasive methods such as transcranialdoppler, tympanic membrane displacement, and central venous pressure measurement[3,4,5,6]. Some researcher raised the point that monitoring of IOP can be used to speculate ICP[7,8]. The interaction between ICP, which formed by cerebrospinal fluid, and IOP, which formed by aqueous humor, has its theoretical basis of anatomy. Other scholars believe that there is no contact between ICP and IOP[9,10]
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