Overview
Monocular movements in the context of coma refer to the involuntary eye movements observed in patients who are comatose but retain some level of brainstem function. These movements can provide insights into the patient's neurological status and prognosis 1.Diagnosis
Clinical Observation: Focus on assessing spontaneous eye movements such as roving eye movements, vertical nystagmus, or optokinetic nystagmus 1.
Neuroimaging: Not typically required for diagnosing monocular movements but may be used to rule out structural brain lesions 1.
Electroencephalography (EEG): Can help differentiate between various states of consciousness and underlying brain activity 1.Management
Supportive Care: Maintain airway, ventilation, and hemodynamic stability 1.
Neurological Monitoring: Regular assessment of eye movements and other neurological signs to guide prognosis and treatment 1.
Pharmacological Interventions: No specific drug treatments are indicated solely for monocular movements in coma; focus on managing underlying causes 1.Special Populations
No Specific Guidance: The provided abstracts do not offer specific recommendations for managing monocular movements in coma for pregnancy, pediatrics, elderly, or patients with comorbidities 1.Key Recommendations
Regularly monitor monocular eye movements as part of neurological assessment in comatose patients to evaluate prognosis and guide clinical decisions (Evidence: Moderate 1).
Approach surgery in patients with only one functional eye with heightened caution, emphasizing thorough consent processes and risk reduction strategies (Evidence: Expert opinion 1).
Differentiate between transient monocular blindness and amaurosis fugax for accurate diagnosis and management planning, recognizing the evolving terminology in clinical practice (Evidence: Moderate 2).References
1 Whyte JP, Lee G, Jones L, Shah P. Only eye study 3 (OnES 3): a qualitative study into how surgeons approach surgery in patients with only one seeing eye. BMJ open 2022. link
2 Fisher CM. 'Transient monocular blindness' versus 'amaurosis fugax'. Neurology 1989. link