ABERRATIONS IN PATIENTS IMPLANTED WITH LIGHT
ADJUSTABLE INTRAOCULAR LENSES
Pablo Artal, Encarna Alcón, Eloy Villegas, Carmen Cánovas, Elena Rubio*, José M. Marín*LABORATORIO DE OPTICA, UNIVERSIDAD DE MURCIA, SPAIN
* Hospital Virgen de la Arrixaca, Murcia, SPAIN
Supported by:
Reserch funding and consulting reimbuserment provided by Calhoun Vision, USA
Best focus (0 D, 0 D)
Refractive errors (defocus & astigmatism) produce the most
deleterious impact in vision after cataract surgery
Refractive error (1 D, 1 D)
Spatially resolved irradiation
h"lock-in"
h
Light adjustable intraocular lenses (LALs)* allow nearly PERFECT refractive outcomes and improved
quality of vision after cataract surgery
*
Surgery
Corneal stabilization
Two weeksadjustment + lock-ins
+
LALs procedure:
64 patients implanted with LALs have been carefully measured with
an objective WAVEFRONT approach
for refraction and aberration control through the whole
treatment process
Post_1ºadjustment Post_lock-in1 Post_lock-in 2Pre adjustmenttreatment lock-ins
Example of eye’s (all) aberrations
Post_3months
stability
Induced wavefront
by treatment
Effect of light profiles in LAL’s aberrations
Hyperopic Myopic Astigmatic light treatments…
LAL = eye - cornea(Artal and Guirao, Opt.Lett., 1998; Artal et al., JOV,2001)
-=
= -?
M N H1 H2 HA MA1 MA20.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
R
MS
(m
)
4mm pupil
INDUCED ABERRATIONS BY LIGHT TREATMENT
0.00
0.20
0.40
0.60
0.80
1.00
1.20
1.40
1.60
Pre adjustment Adjustment 1 Post Lock-in 2
Corr
ecte
d V
A H1
H2
HA
NN
M
Aspheric
MA1
MA2
Bes
t co
rrec
ted
VA
Impact of induced aberrations by
treatment in visual acuity
Eye
Internal
Cornea
after one month
Eye
Internal
Cornea
aftertreatment
Po
st
loc
k-i
n 2
3 m
on
th
6 m
on
th
1y
ea
r0.0
0.1
0.2
0.3
0.4
0.5
0.6
RMS
mic
ron
s
Stability of the adjustable IOLs after lock-in: changes in LAL’s wavefront?
i) The light adjustment profiles induced small amounts of high order aberrations, except for the myopic astigmatism and myopic treatments
ii) These induced aberrations did not compromise visual acuity
iii) The aberrations in the LALs remained nearly constant up to 1 year post-surgery
iv) These results indicate the potential ability of LALs to effectively control the eye´s aberrations
Conclusions