Regional variability in visual field sensitivity during hypercapnia

Previous investigations have demonstrated a relative vascular autoregulatory inefficiency of the inferior compared to the superior retina in healthy subjects breathing increased CO 2. The purpose of this study was to determine whether the superior and inferior visual field sensitivities of healthy e...

Full description

Saved in:
Bibliographic Details
Published in:American journal of ophthalmology 2003-08, Vol.136 (2), p.272-276
Main Authors: Roff Hilton, Emma J, Hosking, Sarah L, Cubbidge, Robert P, Morgan, Andrew J
Format: Article
Language:English
Subjects:
Adult
Biological and medical sciences
Contrast Sensitivity - physiology
Cross-Over Studies
Diseases of visual field, optic nerve, optic chiasma and optic tracts
Female
Glaucoma and intraocular pressure
Humans
Hypercapnia - physiopathology
Male
Medical sciences
Ophthalmology
Retina - physiopathology
Sensory Thresholds - physiology
Visual Fields - physiology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Previous investigations have demonstrated a relative vascular autoregulatory inefficiency of the inferior compared to the superior retina in healthy subjects breathing increased CO 2. The purpose of this study was to determine whether the superior and inferior visual field sensitivities of healthy eyes are similarly affected during mild hypercapnia. Experimental study. Visual field analysis (Humphrey Field Analyser; SITA standard 24-2 program) was carried out on one randomly selected eye of 22 subjects (mean age, 27.7 ± 5 years) during normal room air breathing and isoxic hypercapnia. The Student paired t-tests were used to compare the visual field indices mean deviation (MD) and pattern standard deviation (PSD) for each breathing condition. A secondary, sectoral analysis of mean pointwise sensitivity was performed for each condition. In each case a P value of
ISSN:0002-9394
1879-1891
DOI:10.1016/S0002-9394(03)00188-0