Apple
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I noticed my pupils are always dilated and it's been related to coffee. I stayed away from coffee for several days (replaced with tea ) and pupils normalized in size.
Should I be worried about dilated pupils from coffee ?
If caffeine improves accommodation, alertness, and concentration,19 which are crucial for effective reading, why then did Kirshner and Schmid15 observe a negative correlation between caffeine intake and reading improvement, and furthermore, an improvement in reading ability in subjects upon reduction in caffeine intake? Our observation of an enlargement in pupil size after caffeine consumption, although measured in the passive state, provides some clue for the poor performance in reading by subjects after consuming caffeine. An enlarged pupil is associated with increased spherical aberration.20 This is because peripheral and central light rays pass through the pupil and are differently focused after refraction resulting in deterioration in vision.
Should I be worried about dilated pupils from coffee ?
If caffeine improves accommodation, alertness, and concentration,19 which are crucial for effective reading, why then did Kirshner and Schmid15 observe a negative correlation between caffeine intake and reading improvement, and furthermore, an improvement in reading ability in subjects upon reduction in caffeine intake? Our observation of an enlargement in pupil size after caffeine consumption, although measured in the passive state, provides some clue for the poor performance in reading by subjects after consuming caffeine. An enlarged pupil is associated with increased spherical aberration.20 This is because peripheral and central light rays pass through the pupil and are differently focused after refraction resulting in deterioration in vision.
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