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Related Experiment Video

Updated: Feb 22, 2026

Trabecular Meshwork Response to Pressure Elevation in the Living Human Eye
09:03

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Published on: June 20, 2015

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[Intracranial Pressure Evaluation by Ophthalmologist].

J Čmelo, R Illéš, J Šteňo

    Ceska a Slovenska Oftalmologie : Casopis Ceske Oftalmologicke Spolecnosti a Slovenske Oftalmologicke Spolecnosti
    |September 22, 2017
    PubMed
    Summary
    This summary is machine-generated.

    Digital Ophthalmodynamometry (D-ODM) offers a non-invasive method to estimate intracranial pressure (ICT). This screening tool aids in diagnosing various neurological and ocular conditions, providing valuable insights without invasive procedures.

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    Area of Science:

    • Ophthalmology and Neurology
    • Medical Diagnostics
    • Non-invasive Pressure Measurement

    Background:

    • Direct measurement of intracranial pressure (ICT) is accurate but invasive, carrying risks of infection and tissue damage.
    • Indirect methods like Transcranial Doppler ultrasonography (TDU) and Digital Ophthalmodynamometry (D-ODM) are used for ICT estimation.
    • D-ODM measures Venous Pulsation Pressure (VPT), a physiological indicator related to ICT and intraorbital pressure.

    Purpose of the Study:

    • To evaluate the utility of Digital Ophthalmodynamometry (D-ODM) as a non-invasive method for assessing intracranial pressure (ICT).
    • To explore the application of D-ODM in diagnosing various neurological and ocular conditions associated with abnormal ICT.
    • To compare D-ODM with existing indirect methods for ICT measurement.

    Main Methods:

    • D-ODM measures Venous Pulsation Pressure (VPT) by analyzing pulse phenomena.
    • ICT is approximated using mathematical formulas involving VPT, intraocular pressure (VOT), pulsatility index (PI), Body Mass Index (BMI), and other physiological parameters.
    • Normal VPT values are below 15 torr; increased ICT risk is associated with values above 20 torr.

    Main Results:

    • D-ODM provides an indirect, non-invasive estimation of intracranial pressure (ICT).
    • Calculations for approximate ICT are derived from VPT and other measurable parameters.
    • Physiological relationships between VPT, ICT, and intraocular pressure are described.

    Conclusions:

    • D-ODM serves as a valuable screening tool for conditions such as hydrocephalus, brain tumors, cerebral hemorrhage, glaucoma, and optic neuropathy.
    • It is suitable for immediate ICT evaluation but not for continuous monitoring.
    • D-ODM is recommended for patients suspected of having elevated ICT due to its repeatable nature and non-invasive profile.