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Efekan Coskunseven, MDDunya Eye HospitalIstanbul TURKEY
Saturday –
Booth G15 at 4pm
ESCRS
LONDON
2014
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Total reflection
At ring base
Shadow on
iris
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90º
160º 210º
120º
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Grade I, II, III keratoconus
patients
Older than 18 years of age
Contact lens intolerance
Corneal thickness at least 400µ
at tunnel location
ADVENCED CENTRAL CONE
, PARA CENTRAL CONE
Keratometer readings ≥ 65D
severe atopic patients
corneal dystrophies,
hydropse, corneal opacities,
herpetic keratitis
collagen vascular,
autoimmune diseases, other
systemic diseases,
Patients that could not return
for follow-ups
Patient Inclusion
Criteria
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PRPREOP
PRE-OP
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PRE-OP
Steep Axis: 97
Min Corneal Thickness: 517
Oto Ref: -8,00-4,50x 180
UCVA: 0,02 BCVA:0,05
Standart Intralae Settings
Inner Diameter: 4,8 mm
Outer Diameter: 6,8 mm
Incision Axis: 97
Energy: 1,5 mJ
Depth: 370 micrometer
340 degree
300 micron
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POST-OP
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POST-OP
Oto Ref: -3,00—1,25x15
UCVA: 0,4
BCVA:0,5
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DIFFERENCE MAP
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61,5-45: 16,5 D52,2-44,1: 8,1 D
11,3 D
12,3 D
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0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Pre-Op Post-340 K
0.05
0.4
0.24
0.5
UCVA-BCVA
UCVA
BCVA
UCVA BCVA
Pre-Op 0,05 0,24
Post-340 K 0,4 0,5
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-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
Pre-Op Post-340 K
-4.38
-2.25
-9.26
-3.24
D
Cylinder & SEQ
CYL
SE
CYL SE
Pre-Op -4,38 -9,26
Post-340 K -2,25 -3,24
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51.8
43.8
K1
K1
Pre-Op 51,8
Post-340 K 43,8
K2
Pre-Op 55,6
Post-340 K 47,4
55.6
47.4
K2
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53.7
45.6
Mean K
Mean K
Pre-Op 53,7
Post-340 K 45,6
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KeraRing 340 implantation is an effective and a safe method for the improvement of UCVA and BCVA in CENTRAL OR PARACENTRAL CONE keratoconic eyes .
Effectiveness is about 7 D central flattening with 200 micron segment
About 13D with 300 microns.
However a long-term follow-up of a larger population study is required to validate these findings