Michael Duplessie Eye Department, Eye surgery and eye care
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Transcript of Michael Duplessie Eye Department, Eye surgery and eye care
Eye Care
Eye Department
Why have an eye exam ?
Most eye disease is silent
Glaucoma
Hypertension
This is what we can see. Think of Kidneys and Brain.
Normal
“My vision is a little blurry”
Diabetes -pathophysiology
Breast Cancer
Lung Cancer
Hemangioma – blood vessel tumor
Retinoblastoma – tumor in children
Indications for evaluation: A decrease in vision affecting the patients
quality of life. This may be evaluated by: Reduced Vision Debilitating glare Double vision Debilitating halos { I can’t drive at night} Do not want to wear glasses or contact lenses
Cataracts:
Cataracts:
Cataract Surgery
Traumatic cataract and iridodialysis from Bungee cord inury
With the rule astigmatism
Against the rule astigmatism
Oblique Astigmatism
Toric IOL prior to insertion
Back to back suturing of toric iol
IOL being inserted into the bag
Lens lying on axis in bag
Iatrogenic – Pseudophakic disastersAside from power calculation errors there can
be many problems with the lens
Presbyopic Correction
Human Optics AG
Anatomy of the Apodized Diffractive Technology
Anterior Aspheric Optic
AnteriorApodizedDiffractiveOptic
Symmetric Biconvex
13.0 mm
6.0 mm 6.0 mm
AcrySof ® IQ ReSTOR® IOL
Other Presbyopic Options Inlays
Acufocus (B&L)
Multifocal LASIK PresbyLASIK
Acufocus Inlay Bausch & Lomb
3.8 mm ring 10 µm thick 1.6 mm central hole 1,600-1,8000 fenestrations
INLAY
Acufocus Increase Depth of Field
Distance and Near Turkey Study
39 patients Almost all are 20/16 or
better distance and near
Many Corneas:
Corneal melt
Traumatic
Corneal Transplant
DSEAK vs PKP
NO GLASSES OR CONTACTS NO PROBLEM
Excimer laser
Introduction a 193-nm argon-fluoride laser is used to
photoablate the affected areas and create a smooth transparent surface.
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Wavefront Correction
Astigmatism Correction
Spherical CorrectionPAST
PRESENT
FUTURE (NOW)
A Brief History of Vision Correction
More Detailed Information Wavefront technology was originally
developed for use in high powered telescopes to reduce distortions when viewing distant objects in space.
This technology has now been applied to laser vision correction.
Hartmann-Shack Aberrometer
CCD-Camera Lens Array
Outcoming Wave CCD-Image
How Do We Measurea Wavefront?
Wavefront Guided Ablation
Excimer SMILE FLEX Conventional Lasik
SMILE VS LASIK
SMILE
Excimer videos SMILE FLEX Conventional Lasik
Visian ICL
< 100 microns:
< 50 microns
500-600microns
Myopic Visian ICLHigh Resolution Magnetic Resonance Images
Illustrates the Increased Vault with V4
Version V3 Version V4
Keratoconus
