High-Order Aberrations: A Key Factor in Accommodative Dysfunctions
Applied Sciences,
Journal Year:
2024,
Volume and Issue:
14(19), P. 9119 - 9119
Published: Oct. 9, 2024
This
study
investigated
the
relationship
between
high-order
aberrations
(HOAs)
and
accommodative
dysfunctions
by
analyzing
their
changes
with
accommodation.
Understanding
this
is
important
for
understanding
mechanisms
underlying
these
conditions.
Sixty-three
subjects
were
divided
into
five
groups:
control,
infacility
of
accommodation
(INFA),
excess
(EA),
insufficiency
(INSA),
symptomatic
without
dysfunction
(SWD).
Variations
in
root-mean-square
(RMS)
3rd,
4th,
5th,
6th
orders
HOAs,
fluctuations
RMS
measured
using
a
Shack–Hartmann
aberrometer
at
different
stimuli
during
residual
after
removal,
following
order:
0.00
D,
1.00
2.45
4.73
D
D.
The
SWD
group
showed
significant
increase
HOAs
In
contrast,
EA
an
improvement
ocular
optical
quality
higher
stimuli.
Different
patterns
observed
across
all
groups,
increased
significantly
These
distinct
aberration
suggest
potential
link
mechanisms,
providing
insights
that
may
aid
earlier
diagnosis
improved
management.
Language: Английский
Individual Variations in Vergence and Accommodation Responses Following Virtual Reality Gameplay
Alona Sumarokova,
No information about this author
Reinis Alksnis,
No information about this author
Daniel Rappo
No information about this author
et al.
Vision,
Journal Year:
2024,
Volume and Issue:
8(4), P. 69 - 69
Published: Dec. 20, 2024
Virtual
reality
(VR)
can
challenge
the
visual
system,
leading
to
temporary
oculomotor
changes,
though
degree
of
change
varies
among
individuals.
While
vergence
and
accommodation
system
plays
a
crucial
role
in
VR
perception,
it
remains
unclear
whether
individuals
whose
functions
fall
outside
clinical
norms
experience
larger
changes.
Thus,
our
study
aimed
investigate
changes
responses
following
gameplay
differ
between
with
without
non-strabismic
binocular
accommodative
disorders.
To
assess
this,
both
subjective
objective
measurements
were
conducted
before
after
20
min
playing
Beat
Saber.
Results
revealed
significant
alterations
across
measurements—near
point
convergence
near
accommodation—and
measurements,
including
eye
refraction,
lag,
microfluctuations
at
far.
Moreover,
disorders
exhibited
far
compared
control
group.
Overall,
these
findings
indicate
that
considering
individual
differences
is
important
when
evaluating
impact
on
be
helpful
design
use
systems,
particularly
for
Language: Английский