Optic nerve monitoring.

Area of Science:

• Neurosurgery
• Ophthalmology
• Neurology

Background:

• Orbital and anterior skull base surgery poses risks to the prechiasmatic visual pathway.
• Assessing visual pathway integrity is critical, especially when clinical examination is limited.

Purpose of the Study:

• To highlight the importance of electrophysiologic methods for diagnosing visual pathway damage.
• To outline diagnostic and treatment strategies for traumatic visual pathway injuries.

Main Methods:

• Utilizing flash visual evoked potentials (VEPs) and electroretinograms (ERGs) for assessing visual pathway conductivity.
• Employing multislice spiral computed tomography (CT) for rapid injury assessment.
• Considering megadose methylprednisolone therapy and surgical decompression for optic canal compression.

Main Results:

• Electrophysiologic tests provide objective data on visual pathway function when clinical assessment is not feasible.
• Multislice spiral CT facilitates timely treatment decisions for visual pathway injuries.
• Prompt diagnosis and treatment, including conservative or surgical interventions, are vital for preserving visual acuity.

Conclusions:

• Flash VEPs and ERGs are essential for diagnosing and monitoring visual pathway damage in challenging patient scenarios.
• Integrated diagnostic approaches combining electrophysiology and advanced imaging are key for managing traumatic visual pathway injuries.
• Effective management strategies aim to preserve visual acuity through timely and appropriate interventions.