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Related Experiment Videos

Prandial presbyopia: the muffin man.

H L Hudson1, V Rismondo, A A Sadun

  • 1Doheny Eye Institute/USC School of Medicine, Los Angeles 90033.

The British Journal of Ophthalmology
|December 1, 1991
PubMed
Summary
This summary is machine-generated.

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A man experienced temporary blurred near vision triggered by eating, a previously unreported symptom. This visual disturbance, linked to the gustatory and accommodation pathways, highlights a unique neurological connection.

Area of Science:

  • Ophthalmology
  • Neuroscience
  • Gastroenterology

Background:

  • Transient blurring of near vision can stem from diverse causes.
  • Understanding the interplay between sensory pathways and visual function is crucial.

Observation:

  • A 35-year-old man presented with a decade-long history of near vision blurring.
  • This visual disturbance consistently initiated 30-45 seconds after starting meals and persisted for 10-15 minutes post-meal.

Findings:

  • Standard neurological and orbital imaging (MRI, CT) showed no abnormalities.
  • Retinoscopic examination revealed a 1.5 diopter loss of accommodative power in each eye within one minute of initiating a meal.
  • Direct cranial nerve stimulation did not reproduce the visual symptoms.

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Implications:

  • This case presents a novel association between gustatory stimulation and transient accommodative dysfunction.
  • Further research into the neuroanatomy of accommodation and gustatory pathways may elucidate this phenomenon.
  • This finding could inform differential diagnoses for unexplained visual disturbances related to eating.