Symptomatic corneal topographic change induced by reading in downgaze.
OBJECTIVE
To elucidate the cause of monocular blur or diplopia after reading in downgaze.


METHODS
Corneal topography was obtained before and after a 15-to 30-minute reading effort in downgaze in three symptomatic patients and in nine asymptomatic control subjects.


RESULTS
Changes in corneal topographic color maps, corneal uniformity index, and predicted corneal acuity were found in the symptomatic patients but not in the control subjects before and after reading.


CONCLUSIONS
Changes in corneal topography can occur after prolonged reading in downgaze and may produce symptoms of blur or monocular diplopia.
Golnik
K C
KC
Department of Ophthalmology, University of Cincinnati and The Cincinnati Eye Institute, Cincinnati, Ohio, USA. kgolnick.cwest@worldnet.att.net
Eggenberger
E
E
D000368:Aged; D003315:Cornea / Q000473:pathology*; D003316:Corneal Diseases / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D019781:Corneal Topography; D004172:Diplopia / Q000175:diagnosis / Q000209:etiology*; D005139:Eyeglasses; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011187:Posture; D011932:Reading; D014786:Vision Disorders / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D014792:Visual Acuity