dr. coşkunseven "the new keraring 340 degree segment"

Efekan Coskunseven, MDDunya Eye HospitalIstanbul TURKEY

efekan.coskunseven@dunyagoz.com

Saturday –

Booth G15 at 4pm

ESCRS

LONDON

2014

Total reflection

At ring base

Shadow on

iris

90º

160º 210º

120º

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

PRPREOP

PRE-OP

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

POST-OP

POST-OP

Oto Ref: -3,00—1,25x15

UCVA: 0,4

BCVA:0,5

DIFFERENCE MAP

61,5-45: 16,5 D52,2-44,1: 8,1 D

11,3 D

12,3 D

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

-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

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

53.7

45.6

Mean K

Mean K

Pre-Op 53,7

Post-340 K 45,6

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

efekan.coskunseven@dunyagoz.com