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Updated: Jun 15, 2026

Correction of Presbyopia by Monocular Bi-Aspheric Ablation Profile

Published on: September 20, 2024

Prandial presbyopia.

Allon Barsam¹, Devinder S Chauhan, Stacey A Strong

¹Moorfields Eye Hospital, London, United Kingdom. abarsam@hotmail.com

Journal of Neuro-Ophthalmology : the Official Journal of the North American Neuro-Ophthalmology Society

|February 26, 2010

Summary

This summary is machine-generated.

Prandial presbyopia, a rare loss of focusing ability during meals, was observed in two patients without head trauma. Their accommodation significantly decreased after eating, with a prolonged recovery time, suggesting an unknown cause for this visual disturbance.

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Area of Science:

Ophthalmology
Neuroscience
Physiology

Background:

Prandial presbyopia, or loss of accommodation during meals, is an extremely rare condition.
Previous reports documented this phenomenon in only one patient with a history of head trauma.

Observation:

This study presents two new cases of prandial presbyopia in patients without any history of head trauma.
Dynamic retinoscopy revealed a marked reduction in accommodative amplitude within one minute of meal commencement in both patients.
The diminished accommodation persisted for approximately 55-60 minutes post-meal, with no other neurological or autonomic dysfunctions noted.

Findings:

Two patients exhibited isolated prandial presbyopia, a condition previously linked to head trauma.
The onset of accommodative amplitude loss was rapid, occurring within a minute of eating.
Recovery of visual accommodation was significantly delayed, lasting up to an hour.

Implications:

The findings challenge the established link between head trauma and prandial presbyopia.
The etiology of this isolated visual disturbance remains unidentified, warranting further investigation.
Understanding the cause could offer insights into the complex mechanisms of visual accommodation and autonomic regulation during digestion.