Table of Contents - WOC 2012

FP-CAT-MO 369 (5)
Outcomes After Crystalens HD Accommodative Intraocular Lens
Implantation
Pallikaris Ioannis (1) , Karavitaki Alexandra (1)
1. University of Crete
Purpose: To report the outcomes after Crystalens HD accommodative
intraocular lens implantation
Methods: 22 patients (44 eyes) with mean age 62, 09± 4, 49 years (range from
54 to 71 years) underwent cataract surgery and bilateral Crystalens HD lens
implantation.
Results: Mean follow-up was 16, 62 ± 5, 58 months (range from 4 to 23 ).
Uncorrected Distance Visual Acuity (UDVA) improved from 0,4 ±0,27 (range
from 1 to 0) preoperatively to 0,14±0,13 (range from 0,46 to 0 ) and Distance
Corrected Visual Acuity (CDVA) improved from 0,11 ± 0,15 (range from
0,54 to 0 ) preoperatively to 0,03 ±0,07 (range from 0,26 to 0) (LogMar) at
the last follow up. 82% of our patients had J2 or better of near vision, at
the last follow up, measured with Birkhauser reading charts at 35cm under
photopic conditions. 73% of our patients had J2 or better of intermediate vision,
measured with Birkhauser reading charts at 60cm under photopic conditions
No complications occurred intra or postoperatively.
Conclusion: Crystalens HD, can restore some degree of accommodation
providing satisfactory visual outcomes for distant, intermediate and near vision.
FP-CAT-MO 369 (6)
Experience with a New ‹Chopper› Phaco Tip for Hard Cataracts
Allen David (1)
1. Sunderland Eye Infirmary
Purpose: A new blade-like tip has been developed to allow ultrasonic chopping
of a cataract. This Paper describes early experience with this tip in hard
cataract cases.
Methods: A series of hard cataracts was operated using the Alcon Infiniti
system using OZil torsional phaco and this new tip. The tip is used to cut a
narrow groove deep into the body of the nucleus. Different methods of splitting
the nucleus after grooving/chopping were explored.
Results/Conclusions: This new tip can effectively create a narrow groove in
dense cataracts which can then be split to achieve nucleus disassembly safely.
WOC2012 Abstract Book
FP-CAT-MO 369 (7)
Experimental Study of Wavefront Aberrations of Aspherical
Intraocular Lens
Xin Tang (1) , Lu Wang (1) , Hui Song (1)
1. Tianjin Eye Hospital
Objective: To assess the effects of aspherical IOLs, including effects on visual
acuity, spherical aberration, high-order aberrations (HOA),coma and trefoil.
Using ZEMAX optical design program to analysis the optical quality of the IOLs
in the Hwey-Lan Liou model eye.
Methods: Using ZEMAX optical design program, (1) analogue monochromatic
aberration of the IOLs at the length of 550nm, pupil diameters were 3mm~6mm;
(2) analogue chromatic aberration of the IOLs at photopic and scotopic
conditions, pupil diameters were 3mm and 4.5mm. (3) The longitudinal
chromatical aberration (LCA) was estimated directly (from the defocus term in
the polynominal expansion of the wavefront aberration).
Results:
1. With the increasement of the aperture sizes, the modulation transfer function
(MTF) of the aspherical IOLs decreased, both in the monochromatic and
chromatic aberration
2. In the aperture of 3mm~6mm, the MTF of the aspherical IOLs were superior
than that of the spherical one.
3. No matter in the photopic or scotopic condition, the MTF is higher in IOL
Hoya£¨Abbe=43£© than IOL SA60AT£¨Abbe=37£©
Conclusion:
1. Aspherical IOLs can increase the visual quality
2. With the increasement of the aperture sizes, the optical performance of the
aspherical IOL decreased
3. The lower the chromatic dispersion of the IOL, the higher the MTF
FP-CAT-MO 369 (8)
Cataract Surgery with the Modified CTR in Patients with Traumatic
Zonular Dialysis and Mydriasis
Malyugin Boris (1) , Golovin Andrey (1)
1. S.Fyodorov Eye Microsurgery Complex State Institution
Purpose: To investigate the safety, visual functions, pupil appearance and final
IOL position after phacoemulsification combined with Malyugin-Cionni CTR
scleral suturing, in-the bag IOL fixation and iridoplasty.
Methods: 6 patients (mean age 49.14+/-11.7 years) with traumatic cataract,
zonulolysis and fixed dilated pupil after blunt trauma dated from 5 months to 16
years. The extent of the zonular defect varied from 60 to 210 degrees (mean
89 degrees) according to UBM.
Results: Preoperatively BCVA varied from counting fingers to 20/70 and
improved to the mean 20/30 after the surgery. No major complications were
observed during the surgery. One patient required glaucoma surgery 3 months
after the primary operation. The follow-up was 7.8±2.2 months. Capsular
bag and IOL position were verified with ultrasonic biomicroscopy. In all of the
patients IOL and the capsular bag were positioned centrally. Mean shift in
the direction of the traction suture was 0.25+/-0.22 mm, lens tilt 5.39+/-4.05
degrees. IOP was normal, pupil usually having a polygonal shape with 3.5mm
to 4.0 mm diameter.
Conclusions: Combining the CTR scleral suturing with clear corneal phaco and
iridoplasty provided favorable functional and cosmetic results.
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