Evaluation of a complete 1.8 mm coaxial microincision cataract (C-MICS 1.8) procedure
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Transcript of Evaluation of a complete 1.8 mm coaxial microincision cataract (C-MICS 1.8) procedure
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J. E. “Jay” McDonald, II M.D.
McDonald Eye Associates
Fayetteville, Arkansas
www.mcdonaldeye.com
Financial disclosure: Bausch and Lomb – Consultant; Addition Technology - Advisory Board; Santen - Research Support; Acufocus - Research Support; Alcon Pharmacology - Speaker Bureau; Wave Tec – Research Support; Inspire – Consultant; Revitalvision, Inc. - Advisory Board
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Coaxial Microincision Cataract Surgery Coaxial Microincision Cataract Surgery (MICS)(MICS)
The trend in cataract surgery is toward smaller incisions
Coaxial MICS (C-MICS)Use current phaco techniqueReduce surgically induced astigmatism (SIA)1-3
Increase wound sealability4 Reduce endothelial cell loss5
1.Heg Wee Jin. WOC 2008, Hong Kong. 2.Braga-Mele R. ASCRS in San Francisco, CA, April, 2009.3.Barrett GD. APAO Congress. Bali, Indonesia, May, 2009.4.Barrett GD, Carlsson A. Canadian Ophthalmological Society, Montreal, Canada, June, 2007. 5.Zafirakis P. ASCRS in San Francisco, CA, April, 2009.
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Complete MICS SystemComplete MICS System
Stellaris system for 1.8 mm phaco Akreos MICS IOL implantable through
1.8 mm incision
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Stellaris 1.8 Coaxial MICS Only system designed for coaxial 1.8 mm
microincision cataract surgery (C-MICS) Easy transition from small-incision to
microincision surgery StableChamber fluidics enhances
followability, holdability and chamber stability
1.8 mm C-MICS(22 gauge)
2.8 mm SICS(19 gauge)
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Akreos MICS IOLAkreos MICS IOL
Akreos MICS lens inserts through 1.8 mm phaco incision30% thinner than
Akreos AO lens Aspheric aberration-free
optic Moderate refractive index 360° posterior square-edge design
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StudyStudy Retrospective chart review All procedures by same surgeon in same OR Millenium small incision cataract surgery (SICS)
2.8 mm (n=45) Eyes implanted with SofPort AO or Crystalens IOL
Stellaris 1.8 mm MICS (n=63) Eyes implanted with Akreos MICS IOL
EPT, cataract density assessed perioperatively Flare/cells assessed 3.5-5.0 hours postop
Trace=0.5, 1=1.0, 1+-1.5, 2=2.0, 2+=2.5 Uncorrected and best-corrected distance visual
acuity at 3 and 6 months Some eyes targeted for monovision; measured
uncorrected and best-corrected near VA at 3 and 6 months
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ResultsResults
SICS MICS P-value
Cataract Density
2.12 2.150.7745
EPT 3.9 4 0.7851
Cells/Flare 1.78 1.26 0.0001
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Mean Distance Visual Mean Distance Visual AcuityAcuity
3M UCVA
3M BCVA
6M UCVA
6M BCVA
2.8 mm SICS
20/34 20/25 20/26 20/24
1.8 mm MICS
20/27 20/21 20/25 20/21
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3 Month Distance Visual Acuity3 Month Distance Visual Acuity
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6 Month Distance Visual Acuity6 Month Distance Visual Acuity
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Conclusion Microincision cataract surgery results in
a quieter postoperative eye than small incision cataract surgery
Minimizing incision size in cataract surgery may also:Decrease surgically induced astigmatismImproves wound strength and integrityReduces endothelial cell lossReduce postoperative endophthalmitisReduce patient recovery time