Transcript Early experience with an anterior chamber phakic IOL

Early Experience With Anterior
Chamber Phakic IOL
Ahmed El-Massry M.D.
Professor of Ophthalmology
Alexandria University
Egypt
The author has no financial interest in the subject matter of this e-poster.
US Status: Investigational device limited by Federal Law to investigational use only
Refractive Options – Anterior Chamber
(Angle Supported )
NuVita MA20
(B&L)
PMMA
(IOL Tech)
ZSAL4
(Morcher)
NewLife
(IOL Tech)
Kelman Duet
(Tekia)
Vivarte
(Ciba)
ICARE
(Corneal)
Design Challenges
 Achieve low compression force
 Gentle on delicate ocular tissues
 Avoid pupil ovalization
 Decrease inflammation
 Maintain stability despite low compression force
 Ensure low vault response as a function of compression
 Critical for safe placement within anterior chamber
 Facilitate reliable small incision surgery
 Low inflammation and surgical induced astigmatism
Ideal Lens Position in vivo
(no iridectomy/iridotomy required)
Anterior Chamber Ocular Coherence Tomography
Optic
2/3
2/3
Bridge
Footplate
1/3
1/3
Iris
Crystalline
Lens
*ZEISS is a registered trademarks of Carl Zeiss AG.
purpose
 To evaluate the efficacy, stability , endothelial cell
count, visual outcome , higher order aberration
changes , IOP and lens position of one type of
Phakic IOLs (Cachet produced by Alcon
Laboratories) on six month period of follow up.
Methods
 A prospective non randomized single center study was done on:
- Twenty eyes of high myopes.
-That are eligible for anterior chamber phakic IOLs.
-Ranged from -10.00 Diopters to -16.50 Diopters.
-Anterior chamber depth is not less than 3.5mm.
-Endothelial cell count was not less than 2500 cells / mm2
-Age ranged from 26 to 33 years of age . In one eye opposite clear
corneal incision was done to correct 1.0 Diopter of astigmatism.
Methods
 All cases were operated under general anesthesia in Alex
Eye Center in Alexandria, Egypt.
 Phakic IOL (Cachet type of Alcon Laboratories) had been
inserted for all the 20 eyes.
 12 eyes for females and 8 were males
 No intraoperative complication had been reported.
Results
 Early results showed Uncorrected visual acuity of 0.8 to 1.0
on Snellen's chart in all eyes day 7 after surgery .
 One eye had a spike of increased IOP six hours after surgery
and had been controlled by oral Carbonic anhydrase inhibitor
drug.
 Six months follow up results of endothelial cell count ,
stability of the IOL, IOP showed non significant changes than
preoperative data.
Conclusions
 Early results show good visual outcome of the new phakic
Cachet IOLs .
 Longer period of follow up is needed to evaluate stability and
endothelial cell count for this new lens .
Thank you