1. EVALUATION OF REFRACTIVE OUTCOMES AFTER IOL IMPLANTATION
IN POST LASIK EYES
D. RAMAMURTHY, R. CHITRA
THE EYE FOUNDATION
COIMBATORE, INDIA.
THE AUTHORS HAVE NO FINANCIAL INTEREST
IN THE SUBJECT MATTER OF THIS POSTER
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2. TO ANALYSE THE REFRACTIVE OUTCOMES AFTER CATARACT SURGERY
OBJECTIVE
TO ANALYSE THE REFRACTIVE
OUTCOMES AFTER CATARACT SURGERY
IN POST LASIK PATIENTS

3. MATERIALS & METHODS
12 EYES OF 10 PATIENTS UNDERWENT CATARACT SURGERY 26 – 90 MONTHS POST LASIK TREATMENT
REFRACTIVE OUTCOME POST CATARACT SURGERY WAS ANALYSED SIX WEEKS AFTER CATARACT SURGERY

4. MATERIALS & METHODS ALL PATIENTS HAD UNDERGONE LASIK IN OUR CENTRE
COMPLETE DATA AVAILABLE
IOL POWER CALCULATED BY
- ASCRS WEBSITE ONLINE CALCULATOR
- HAIGIS – L FORMULA IN IOL MASTER
- B – SCAN IMMERSION BIOMETRY WITH
CLINICAL HISTORY

5. ASCRS WEBSITE ONLINE CALCULATOR
S.NO : 9 IN TABULAR COLUMN

6. IOL MASTER
S.NO : 9 IN TABULAR COLUMN

7. IMMERSION
S.NO : 9 IN TABULAR COLUMN

8. CLINICAL HISTORY S.NO : 9 IN TABULAR COLUMN REFRACTION
PRE LASIK : – 9.75 DSPH / DCYL X 180°
POST LASIK : PLANO
CORRECTION ACHIEVED : (SPHERICAL EQUIVALENT)
PRE LASIK KERATOMETRY
OD K1 : D
K2 : D
AVG K : D
KERATOMETRY FOR IOL POWER CALCULATION
ACTUAL K FOR IOL POWER CALCULATION : D
IOL POWER CALCULATED BY CLINICAL HISTORY : 19D

9. POST LASIK CATARACT OUTCOMES
S.NO
CORRECTION ACHIEVED BY LASIK
IOL POWER CALCULTED
IOL POWER
POST OP REFRACTION
IDEAL POWER
CLOSEST
ASCRS
HAIGIS - L
CLINICAL HISTORY 1
/ X 90
+20.83DS
+22.50DS
+20.0DS
+22.0DS
-1.0DS (6/18)
+21.0DS 2
/ X 25
+23.67DS
+25.0DS
+23.50DS
PLANO(6/9)
SAME 3
/ -1.0 X 170
+15.08DS
+15.0DS
+16.0DS
+0.50DS/-2.25*130(6/18)
+15.50DS 4
-15.5
+13.91DS
+12.50DS
+16.50DS
+14.0DS
PLANO(6/18) 5
/ X 160
+20.89DS
+23.0DS
+19.50DS
+20.50DS 6
- 6.0 / X 5
+21.50DS
-1.0DS(6/9) 7
/ X 30
+22.67DS
-0.50DS/-0.50*40(6/6) 8
/ X 10
+20.95DS
PLANO(6/6P) 9
/ X 180
+18.07DS
+17.0DS
+19.0DS
+18.0DS
+0.75DS(6/9P) 10
- 7.5 / X 160
+19.16DS
+18.50DS
+0.50DS(6/9)
AS/CH/HL 11
/ X 180
+22.09DS 12
/ X 180
+21.57DS

10. POST LASIK CATARACT OUTCOMES
EMMETROPIA WAS ACHEIVED IN 6 OUT OF 12 EYES
ALL EYES HAD RESIDUAL ERROR < 1 D SPH
1 EYE HAD RESIDUAL 2.25 D CYL WHICH WAS PREEXISTENT & CANNOT BE ATTRIBUTED TO ERROR IN IOL POWER CALCULATION
ASCRS CALCULATION PREDICTED THE CLOSEST POWER IN 7 EYES
CLINICAL HISTORY PREDICTED CLOSEST IN  4 EYES
ASCRS /CLINICAL HISTORY / HAIGIS L  ALL PREDICTED CORRECTLY IN 1 EYE

11. CONCLUSION IN OUR SERIES
ASCRS ONLINE CALCULATOR PREDICTS IOL POWER MOST ACCURATELY FOLLOWED BY CLINICAL HISTORY AND LEAST PREDICTABLE WAS HAIGIS – L VALUES WITH IOL MASTER