Optic Nerve Head Strain in Non-glaucoma Subjects

Exclusion Criteria

• •in whom sitting in an upright position is impossible due to physical disability
• •with ocular media opacity, corneal scarring, cataract or vitreous hemorrhage, that does not allow adequate imaging resolution.
• •in whom keeping the eyes open during the imaging procedure is not possible or uncomfortable.
• •who cannot perform home tonometry accurately at certification
• •who do not have reliable clinical Optical Coherence Tomography (OCT) testing.
• •with any form of glaucoma
• •with high myopia defined as refractive error \> -8
• •with past keratorefractive surgery, corneal dystrophy, or corneal ectasia that would make self-tonometry measurements difficult to interpret
• •inability to understand English or with a language or hearing impairment