Evaluation of the Repeatability and Reproducibility of Corneal Epithelial Thickness Mapping With SD-OCT

Evaluate the repeatability and reproducibility of the RTVue-XR for measuring the total corneal thickness (pachymetry), the epithelial thickness, and the stromal thickness mapping in normal subjects and corneal patients.

Inclusion Criteria:

• Able and willing to provide consent.
• Able and willing to complete required exams
• History of refractive surgery, contact lens, dry eye or keratoconus for corneal patients

Exclusion Criteria:

• Unable to complete required exams
• History of refractive surgery, contact lens, dry eye or keratoconus for normal patients