Familial unilateral Brown syndrome

Area of Science:

• Ophthalmology
• Genetics
• Pediatric Eye Care

Background:

• Brown syndrome is a congenital or acquired condition characterized by limited elevation of the eye in certain gazes.
• It is often associated with abnormalities of the superior oblique muscle or its trochlear pulley.

Observation:

• A six-year-old female presented with isolated left eye impairment in upward movement (dextro-elevation).
• Her mother had a history of surgical correction for the same condition in childhood.
• The patient's younger sibling also exhibited similar symptoms affecting the left eye.

Findings:

• The affected family members displayed consistent clinical signs of left-sided Brown syndrome.
• This presentation represents the first documented instance of three individuals across two generations with left-sided Brown syndrome.
• Autosomal dominant inheritance is hypothesized as the mode of transmission for this family's condition.

Implications:

• This case highlights the importance of thorough family history in diagnosing rare genetic eye conditions.
• Further research into the genetic basis of Brown syndrome is crucial for understanding its inheritance and developing targeted therapies.
• Genetic counseling is recommended for families with suspected hereditary Brown syndrome to inform them about risks and management options.