Positional vertical opsoclonus: a transient phenomenon in normal healthy twins

Area of Science:

• Ophthalmology
• Neurology
• Pediatrics

Background:

• Opsoclonus involves rapid, involuntary, multidirectional saccadic eye movements without pauses.
• Three types of infantile opsoclonus exist, with two linked to underlying conditions.
• A third, benign type occurs transiently in healthy and preterm infants.

Observation:

• A case study involving healthy, non-neurologically impaired twins is presented.
• The twins exhibited transient vertical-plane opsoclonus exclusively when in a supine position.
• These abnormal eye movements ceased upon gentle cheek tapping.

Findings:

• The opsoclonus in the twins began around three months of age.
• The condition resolved completely by six months of age.
• This presentation suggests a benign, positional variant of infantile opsoclonus.

Implications:

• This case expands the understanding of benign infantile opsoclonus presentations.
• It underscores the importance of positional and transient characteristics in diagnosis.
• Further research may clarify the specific mechanisms of this benign variant.