Table 5: The Efficacy index for both PRK and LASIK in myopic and myopic astigmatism patients.

–	LASIK Myopia	PRK Myopia	LASIK Myopic astigmatism	PRK Myopic astigmatism
Post-op 1-year UDVA	1.0094	1.0151	0.9945	1.0212
Pre-op best CDVA	1.007	1.009	0.9954	1.039
The Efficacy index	1.0023	1.006	0.999	0.982