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Table 1 Outcome measures for dry eye disease (DED) patients and control subjects

From: Study design and baseline findings from the progression of ocular findings (PROOF) natural history study of dry eye

Efficacy measures

Primary:

The percentage of patients with signs of DED progression based on at least 1 level increase in severity level as measured by ITF guidelines. Evidence of disease progression by ITF guidelines will require at least one of the following:

• 1-unit increase in total corneal staining

• New development of central corneal staining (≥ grade level 1)

• Increase in OSDI score by ≥6 points

• Increase in blurred vision ≥1 grade (using a 5-point scale)

Secondary:

• % of patients who are discontinued from the study because they need a therapeutic intervention (i.e., the use of cyclosporine, punctal plugs, oral tetracyclines, topical steroids, topical antibiotic ointments, or oral nutritional supplements) due to dry eye disease progression

• % of patients with a ≥ 6 point OSDI increase

• % of patients with a 1 unit increase in blurred vision

• % of patients with a 2 mm decrease in Schirmer’s test over 5 min

• % of patients with at least a 1 grade increase in central or total corneal staining

• Reduction in reading speed

Other:

• Change from baseline in goblet cell density (by impression cytology)

• Tear Break-up Time

• Tear Cytokines

• Dry Eye Patient Survey

Safety Measures

• Adverse Events, Biomicroscopy, BCVA