Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. If you need assistance understanding the eligibility criteria, please contact the study team.See eligibility criteria
- Patients 4-90 years or older.
- Patients with visual acuity between 20/20 and 20/200.
- Subjects with high standard deviation on the testing, which indicates unreliable results.