The objective of this study is to validate the TopQ cutoff scores, which have been previously determined.

Scans with a TopQ score below the optimum cut-off should be considered to be poor or unacceptable quality, and scans with a TopQ score above the cut-off should be considered good or acceptable quality. The study will evaluate the predetermined cut-off values by investigating measurement variability of scans.

Inclusion Criteria

1. Participants must be at least 18 years of age
2. They must be able to complete all testing (all OCT scans)
3. They must volunteer to be in the study and sign the consent form

Exclusion Criteria

1. Subject with history of ocular disease or ocular pathology
2. TopQ score from baseline OCT scan (i.e., without any ND filters) is below the cut-off value.

Subjects with no known eye disease

Normal healthy eyes without any known eye conditions