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Keynote Lectures and InvitedSpeakers
IS-06.1Early intervention of visual impairmentP AYDIN O‘DWYERPrivate Eye Clinic, Ankara, Turkey
Objective: It is very common to have visual problems in chil-
dren with brain damage. The objective of this presentation
is to demonstrate the importance and the value of early
intervention to the visual outcomes.
Methods: Three hundred and fifty children with viusal prob-
lems related to brain damage due to various etiologies have
been examined and treated with various methods. Wearing
hyperopic glasses and using visual stimulating toys and
materials were some of these methods.
Results: In 15% of children a vision has been gained, in
40% an improvement has been observed and in 45% no
improvement has been observed.
Conclusions: Only by early intervention an improvement can
be achieved as the visual cortex has plasticity at early ages
of life.
IS-06.3Visual field defects and compensatingmechanisms in children with brain damageL JACOBSONClinical Neuroscience, Section Eye & Vision, Karolinska Institutet,Stockholm, Sweden
Objective: Pre- and perinatal and later acquired brain dam-
age in children often affects visual function. The resulting
visual dysfunction is characterised by subnormal visual acu-
ity, crowding, visual field defects, cognitive visual impair-
ment and eye motility problems. This presentation will
focus on visual field defects and compensating mecha-
nisms.
Methods: Three studies will be presented: Visual field
function in preterm born children with periventricular
white matter damage and in children with unilateral
spastic cerebral palsy (cp). Visual field function has
been assessed with confrontation, with Goldmann peri-
metry and with computerized perimetry. Fixation and
eye motility was registered during perimetry in a few
teen-agers.
Results: In preterm born children with periventricular
white matter damage causing cerebral visual impairment
we found altitudinal lower visual field restriction, and
often concomitant dorsal stream dysfunction. Many of
the children with unilateral spastic cp had homony-
mous relative defects. Total homonymous hemianopia
was found in 20% of the children with unilateral cp.
Severely restricted visual fields were more often
associated with lesions occurring late in the developing
brain, such as MCA infarcts. Compensating mecha-
nisms such as plasticity, scanning and exotropia will be
discussed.
Conclusions: In children brain damage often affects the visual
system causing visual impairment including restriction of
the visual fields. All children with severely restricted visual
fields were identified by the confrontation technique.
Goldmann perimetry was a suitable method to identify rel-
ative visual field defects. Different mechanisms that com-
pensate the visual field defects may influence visual
outcome in everyday life.
ª 2012 The Authors ª 2012 Mac Keith Press Developmental Medicine & Child Neurology 2012, 54 (Suppl. 3), 22 doi: 10.1111/j.1469-8749.2012.04296.x
DEVELOPMENTAL MEDICINE & CHILD NEUROLOGY