the adaptive optics main componentsvoi.opt.uh.edu/48_rocha_hoaondepthoffocus.pdfdeformable optics...
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The Adaptive Optics Main Components
Observer
Correct wavefront using
deformable optics
Measure residual wavefront
using a sensor
Calculate control parameters
Imagine Eyes
Not all Zernike Terms are Weighted Equally. The more peripheral terms have lesser impact on visual performance, while the
more centrally located ones have a greater contribution
• 10 subjects
• Dominant Eye
• Inclusion Criteria:
clear intraocular media
no ocular diseases /no previous surgeries
age ranged from 25 to 35 years
True Accommodation
Physiologic changes
Accommodation - check
Subjects(N)
Age(years) GenderSE(D)
HOARMS
Trefoilµm
Comaµm
SphAbµm
10 30±28male2female ‐1.05±1.5 0.34±0.10 ‐0.15±0.14 0.07±0.14 0.11±0.10
* 6-mm pupil
num
ber
of
lett
ers
induced defocus
Corr
DOF
DOF middle point
0
2
4
6
8
10
12
‐3 ‐2 ‐1 0 1 2 3 4
corr
Trefoil+0.3
Coma+0.3
num
ber
of
lett
ers
induced defocus
num
ber
of
lett
ers
induced defocus
Corr
num
ber
of
lett
ers
induced defocus
num
ber
of
lett
ers
induced defocus
3.7D Baseline (sphere corr.)
4.0D 0.3µm coma
3.5D 0.3µm trefoil
4.5D 0.3µm SA
6.0D 0.6µm SA
5.9D 0.9µm SA
-0.3µm SA 5.2D
-0.6µm SA 6.0D
-0.9µm SA 5.2D
(D)
-6 –5 –4 –3 –2 –1 0 1 2 3 4 5 6 7
The depth of focus curve (blue curve) strongly increased (up to 2D), but there are a maximum before a decrease for strong values (0.9µm).
mag
nitu
de -
DO
F
magnitude spherical aberration (SA)
The best focus point (pink curve) was continuously shifted (~2.7D/µm).
mag
nitu
de -
DO
F
magnitude spherical aberration (SA)
