EVALUATION OF REFRACTIVE OUTCOMES AFTER IOL IMPLANTATION

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Presentation transcript:

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 Powerpoint Templates

TO ANALYSE THE REFRACTIVE OUTCOMES AFTER CATARACT SURGERY OBJECTIVE TO ANALYSE THE REFRACTIVE OUTCOMES AFTER CATARACT SURGERY IN POST LASIK PATIENTS

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

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

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

IOL MASTER S.NO : 9 IN TABULAR COLUMN

IMMERSION S.NO : 9 IN TABULAR COLUMN

CLINICAL HISTORY S.NO : 9 IN TABULAR COLUMN REFRACTION PRE LASIK : – 9.75 DSPH / - 0.75 DCYL X 180° POST LASIK : PLANO CORRECTION ACHIEVED : - 10.13 (SPHERICAL EQUIVALENT) PRE LASIK KERATOMETRY OD K1 : 45.70 D K2 : 45.20 D AVG K : 45.45 D KERATOMETRY FOR IOL POWER CALCULATION 45.45 -10.13 ACTUAL K FOR IOL POWER CALCULATION : 35.33 D IOL POWER CALCULATED BY CLINICAL HISTORY : 19D

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 - 15.50 / -2.75 X 90 +20.83DS +22.50DS +20.0DS +22.0DS -1.0DS (6/18) +21.0DS 2 - 11.0 / - 3.50 X 25 +23.67DS +25.0DS +23.50DS PLANO(6/9) SAME 3 - 16.0 / -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 - 13.0 / - 1.75 X 160 +20.89DS +23.0DS +19.50DS +20.50DS 6 - 6.0 / - 2.0 X 5 +21.50DS -1.0DS(6/9) 7 - 7.25 / - 1.25 X 30 +22.67DS -0.50DS/-0.50*40(6/6) 8 - 8.50 / -1.50 X 10 +20.95DS PLANO(6/6P) 9 - 9.75 / - 0.75 X 180 +18.07DS +17.0DS +19.0DS +18.0DS +0.75DS(6/9P) 10 - 7.5 / - 0.75 X 160 +19.16DS +18.50DS +0.50DS(6/9) AS/CH/HL 11 - 6.75 / - 1.75 X 180 +22.09DS 12 - 5.50 / - 1.0 X 180 +21.57DS

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

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