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NR 1-3/2008
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Ocena ostrości
wzroku, poczucia kontrastu i aberracji sferycznych w oczach
pseudofakijnych z asferyczną soczewką wewnątrzgałkową
Evaluation of visual acuity,
contrast sensitivity and spherical aberrations in pseudophakic
eyes with an intraocular lens
Michał Wilczyński, Joanna Bartela, Sylwia
Konarska, Aleksandra Synder, Wojciech Omulecki
Z Kliniki Chorób Oczu Uniwersytetu Medycznego w Łodzi
Kierownik: prof. dr hab. n. med. Wojciech Omulecki |
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| Summary: |
Introduction: The
use of modern technologies enables constructing and
producing perfected intraocular lenses. Recently,
aspheric implants have become widely available.
Purpose: The purpose of the study was to evaluate
functional results, contrast sensitivity in scotopic
conditions and spherical aberrations of the optical
system of the eye after phacoemulsification with
implantation of aspheric intraocular lens.
Materials and Methods: The material was gathered
prospectively from January until July 2006. The examined
group included patients who received aspheric
intraocular lenses Adapt AO or AcrySof SN60WF and who
previously had received a conventional foldable
spherical lens in the fellow eye.
The examined group with an intraocular lens Adapt AO
consisted of 25 eyes (25 patients) and the examined
group with an intraocular lens AcrySof SN60WF consisted
of 12 eyes (12 patients).
We examined best corrected visual acuity (BCVA) and
intraocular pressure. Contrastometry in scotopic
conditions and aberrometry were performed.
Intraoperative and early postoperative complications
were noted. For statistical analysis non-parametric U
Mann-Whitney test was used, all calculations were
performed for the level of significance α=0.05.
Results: In the examined groups there were no
intraoperative and early postoperative complications. In
both groups, there was no statistically significant
difference in mean postoperative BCVA between eyes with
an aspheric implant and eyes with a spherical lens.
Assuming the mean contrast sensitivity in eyes with
spherical implants as 100%, we observed that in eyes
with an aspheric lens it was better nearly by one third.
Mean value of spherical aberrations with a pupil
diameter of 5mm (Zernike RMS 5 mm) in eyes with an
aspheric lens was significantly lower in comparison with
eyes with a spherical implant (p<0.05). Similarly, mean
value of higher order spherical aberrations with a pupil
diameter of 5 mm (Higher Order Zernike RMS 5 mm), in
eyes with an aspheric lens was significantly lower in
comparison with eyes with a spherical implant (p<0.05).
Conclusions: Using aspheric lenses Adapt AO and
AcrySof SN60WF allows for achieving very good functional
and anatomic results and it enables to achieve better
contrast sensitivity in scotopic conditions, as well as
significantly decreases spherical aberrations of the
optical system of the eye, in comparison with
conventional spherical lenses. |
| Słowa kluczowe: |
aberracje, poczucie
kontrastu, asferyczne soczewki wewnątrzgałkowe,
fakoemulsyfikacja. |
| Key words: |
aberrations, contrast
sensitivity, aspheric intraocular lenses,
phacoemulsification. |
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