«ASTANA VISION», ASTANA city, Republic of KAZAKHSTANIgor Remesnikov, Vladimir Kim

Refractive and visual outcomes after Femto-SubBowman’s Keratomileusis (Fs-SBK) with myopic astigmatism

Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned

Purpose: To analyze the refractive and visual outcomes after Fs-SBK procedure for myopic astigmatism

Materials and Methods: 58 consecutive cases of Fs-SBK of 29 patients with myopic astigmatism less than 5.00 D (1 group) and 5.00 D or more in the fellow eye (2 group) was performed with 6 months follow-up. Excimer laser Allegretto 400 Hz and femtosecond laser FS200 were used (Alcon). PreOp BCDVA in group 1 was 0.62 and 0.45 in group 2.

Materials and Methods

The mean values of refractive indices before Fs-SBK procedureThe mean values of refractive indices before Fs-SBK procedure

ParametersParameters I I GroupGroup II II GroupGroup

MRSE,MRSE, D D

((meanmean, , intervalinterval))

-8,78-8,78

-1,75 -1,75 to to -17,00 -17,00

-9,04-9,04

-2,50-2,50 to to -17,38 -17,38

AstigmatismAstigmatism, , D D

((meanmean, , intervalinterval))

-3,44-3,44

-0,75-0,75 to to -4,75 -4,75

-5,66-5,66

-5,00-5,00 to to -7,25-7,25

ResultsParametersParameters I I GroupGroup II II GroupGroup

TIA, TIA, DD 2.752.75 4.544.54

TIATIA axis axis, , degdeg 106106 9999

SIA, SIA, DD 2.712.71 4.314.31

SSIAIA axis axis, , degdeg 116116 104104

DV, DV, DD 0.370.37 0.380.38

DV axisDV axis, , degdeg 129129 1111

The mean values of astigmatism vector’s indices (Alpins N.A., 1997) after Fs-SBK procedure

Results

Mean values of Mean values of TIATIA and and SIASIA indices indices

Mean values of visual acuity PreOp and Mean values of visual acuity PreOp and PostOp PostOp

Results• PostOp mean MRSE in group 1 was equal to -0.11 D and

-0.22 D in group 2• Target Induced Astigmatism (TIA) coincides with the

Surgically Induced Astigmatism (SIA) (p≤0,01)• Index of Success (IOS) was 86.85% in group 1 and

91.26% in group 2 (p≤0.01). IOS achieved 100% in 19 (66%) cases in group 1 and in 20 (69%) cases in group 2

• Lines of PostOp NCDVA gained against PreOp BCDVA in 55% of cases in group 1 and in 83% of cases in group 2

• Safety was 100% in all cases

Conclusions: • High refractive and visual outcomes of Fs-SBK procedures

in the correction of myopic astigmatism had received• Only in 3 cases in group 1 and in 2 cases in group 2 in the

PostOp period from 3 to 4 months enhancement by lifting the flap were performed

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