Keith A. Walter, MD Associate Professor of...
Transcript of Keith A. Walter, MD Associate Professor of...
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Femtosecond Laser Assisted Corneal Tattoo
Keith A. Walter, MD Associate Professor of Ophthalmology
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Disclosures
Royalty: Ocular Systems, Inc. Consultant: Abbott Medical Optics; Bausch + Lomb Fees for Non-CME Services: Abbott Medical Optics;
Bausch + Lomb
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Intro
Corneal tattoo described first in 1950 Manual with small gauge
needle Similar to stromal puncture but
with titanium dioxide pigment Takes 20-30 minutes or longer Can be painful post-op Pigment tends to fade over
time 80% need to be retreated
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Corneal Tattoo Palette
Image shown for educational purposes only
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Imagination
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Traditional Tattoo
Tamsulosin patient with temporal iris trauma after cataract surgery. Suffered from polyopia
and glare
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Traditional Tattoo
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Traditional Corneal Tattoo Drawbacks
Although effective it can be painstaking Prolonged effort Painful and inflammatory Pigment fades over time and not solid in blocking
light Difficult to do large areas
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Femtoassisted Corneal Tattoo
First reported in blind eye with leukocoria Kymoinis, et al. Cornea 2009 Feb;28(2):211-3
Femtosecond laser allows you to make a custom pocket at any location Ring segment software Partial LASIK flap
Reporting my first four cases.
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Case 1
Traumatic cataract Post op sector iridectomy Repaired but still had large “keyhole” Intolerable glare and “ghost images”
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Case 1 Pre-op
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Procedure Planning
Used Ring segment software Large ring to limbus with 3 mm width and 150
microns deep. Channel in same area Originally thought I could just inject ink into area Worked ok Had to supplement with needle punctures
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Post op Case 1
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Case 2 – Total Iris
62 y.o. man with history of traumatic aniridia S/P traumatic cataract extraction with pcIOL Complains of intolerable glare and difficulty seeing. Closes eye to drive at night or in bright sun Cosmetic contact lens intolerant
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Case 2 Femto Planning
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Case 2 post op
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Case 3 Sector Iris Loss
39 yo with old paintball injury Traumatic cataract with iris tear at 7 o’clock Complains of edge glare and light sensitivity Closes eye to cope Contact lens intolerant for the last few years
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Case 3 pre-op photos
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Case 3 Femto preview
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Case 3 Post op Day 1
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Case 3 Post op Day 1
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Case 3 Post op Day 1
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Case 3 Slit beam view of pigment layer
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Case 4
30 year old high myope Pre-op for ICL at outside location Had two laser iridotomies in each eye Right eye did fine Left eye ended up with horrible glare and polyopia Lid anatomy was atypical
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Difficult to see the problem, right?
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Case 4 preop
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Surgical plan for Case 4
Remarkable improvement with holding finger over that temporal area Prismatic effect of tears? Plan was for partial LASIK flap Abort after cleared area 200 microns deep Wide channel
This time used iris sweep to dissect pocket
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Post op Case 4
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Hard to see area with lid in normal position
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Summary
Excited about promising technique Much easier than with needle/manual Custom design for each patient Possibly improved cosmetic appearance with both
femto and puncture No pain Easy recover Less likely for redo
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Surgical Alternatives
Iris Suture (when feasible) Level of difficulty = high Complicated by hemorrhage, iris tears, etc Post-operative risks of infection, glaucoma, etc
Iris prosthesis Level of difficulty = high Difficult to get – FDA restrictions Complicated by hemorrhage, iris tears, etc Post operative risks Expensive Incomplete coverage
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