Inclusion Criteria:  Meet requirements for PRK or LASIK i.e., Stable <= .5 D change MRSE) DOD beneficiaries age 21-50 years Local pts (w/i 60 mi) who will be in the area for at least 6 months post surgery Willing to complete all required follow-up visits  Exclusion Criteria:  No meeting requirements for PRK or LASIK Desiring monovision treatment Anisometropia >2D spherical equivalent Prior ocular surgeries / trauma / problem History of dry eyes Hyperopia Mixed astigmatism Inability to capture VARIO topolyzer scans Pregnant (or who plans to be within 6 months after surgery) Breastfeeding any time during the study History of herpetic disease