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Kathleen A. Turano, Gary S. Rubin, Harry A. Quigley; Mobility Performance in Glaucoma. Invest. Ophthalmol. Vis. Sci. 1999;40(12):2803-2809.
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purpose. To determine whether glaucoma affects mobility performance and
whether there is a relationship between mobility performance and stage
of disease as estimated from vision–function measures.
methods. The mobility performance of 47 glaucoma subjects was compared
with that of 47 normal–vision subjects who were of similar age.
Mobility performance was assessed by the time required to complete an
established travel path and the number of mobility incidents. The
subjective assessment of falling and fear of falling were also
compared. Vision function was assessed by measures of visual acuity,
contrast sensitivity, monocular automated threshold perimetry, and
suprathreshold; binocular visual fields were assessed with the Esterman
results. The glaucoma subjects walked on average 10% more slowly than did the
normal–vision subjects. The number of people who experienced bumps,
stumbles, or orientation problems was almost twice as high in the
glaucoma group than the normal–vision group, but the difference did
not reach statistical significance. The difference between groups also
was not significant with respect to the number of people who reported
falling in the past year (38% for the glaucoma group and 30% for the
normal–vision group) or a fear of falling (28% for the glaucoma group
and 23% for the normal–vision group). The visual fields assessed with
a Humphrey 24-2 test were more highly correlated with walking speed in
glaucoma than the visual fields scored by the Esterman scale or than
visual acuity or contrast sensitivity.
conclusions. Glaucoma is associated with a modest decrease in mobility performance.
Walking speed decreases with severity of the disease as estimated by
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