Dry Eye Assessment and Management Study

Average of Ocular Surface Disease Index (OSDI) scores from 6 and 12 months minus average of values from screening and eligibility confirmation visits. OSDI scores range from 0 to 100, with a score of 0 indicating no ocular discomfort and higher scores indicating greater symptom severity. The minimal clinically meaningful change in score is 10 points.

Number of participants with at least a 10 point decrease from baseline in Ocular Surface Disease Index (OSDI). Change is the average score at 6 and 12 months minus the average score at the screening and eligibility confirmation visits. OSDI scores range from 0 to 100, with a score of 0 indicating no ocular discomfort and higher scores indicating greater symptom severity. A negative change score = improvement.

Brief Ocular Discomfort Index (BODI) Pain Interference subscale scores range from 0 to 100, with higher scores indicating greater discomfort. Change is the average score at 6 and 12 months minus the average score at the screening and eligibility confirmation visits. A negative change score = improvement.

Medical Outcomes Study 36--Item Short Form Health Survey (SF-36) Physical Health Subscale. Subscale range is 0-100, with higher scores indicating better self reported physical health-related quality of life. Change is the average score at 6 and 12 months minus the average score at the screening and eligibility confirmation visits. A positive change score = improvement.

Medical Outcomes Study 26--Item Short Form Health Survey (SF-36) Mental Health Subscale. Mental Health subscale range is 0-100 with higher scores indicating better self reported mental health. Change is the average score at 6 and 12 months minus the average score at the screening and eligibility confirmation visits. A positive change score = improvement.

Change in EPA levels in red blood cells - percentage points. Change is the average level at 6 and 12 months minus the level at the eligibility confirmation visit. (Blood was not drawn at the screening visit.) If subjects are compliant, higher EPA levels in red blood cells in the Omega 3 group are expected and no change is expected in the placebo group. Data are missing for 20 subjects in the Omega 3 group and 15 subjects in the placebo group because blood was not drawn at the visit.

Change in DHA levels in red blood cells - percentage points. Change is the average score at 6 and 12 months minus the average score at eligibility confirmation visit (blood was not drawn at the screening visit. If compliant, higher DHA levels in red blood cells in the Omega 3 group is expected and no change is expected in the placebo group. Data are missing for 20 subjects in the Omega 3 group and 15 subjects in the placebo group.

Change in Oleic Acid (from olive oil) levels in red blood cells - percentage points. Change is the average score at 6 and 12 months minus the average score at eligibility confirmation visit. (Blood was not drawn at the screening visit.) Data are missing for 20 subjects in the Omega 3 group and 15 subjects in the placebo group because blood was not drawn.

Average change from 6 and 12 months minus average of values from screening and eligibility confirmation visits among eyes that qualified for the study. Scores range between 0-6, with higher scores indicate more severity. A negative change indicates improvement.

The Schirmer's test measures the production of tears by an eye as measured by mm of wetting of a strip of paper attached to the lower lid for 5 minutes. Scores range from 0 to 30 or more mm. Lower scores indicate more severe dry eye. Change is the average change from 6 and 12 months minus average of values from screening and eligibility confirmation visits among eyes that qualified for the study.

Average of values from 6 and 12 months minus average of values from screening and eligibility confirmation visits. Possible range of scores is 0->20. Low values indicate greater severity. A positive change score = improvement.

Average change from 6 and 12 months minus average of values from screening and eligibility confirmation visits among eyes that quality that qualified for the study. Possible range of scores is 0-15; higher scores indicate more severity. A negative change indicates improvement.

Visual acuity scores of 0-100 correspond to Snellen visual acuity levels of worse than 20/800 to 20/10, respectively. Higher change score = improved visual acuity.

Subjects with change in number of treatments used for dry eye disease, n.,(%)

Eye pressure is measured in millimeters of mercury (mm Hg). Normal eye pressure ranges from 12-22 mm Hg, and eye pressure of greater than 22 mm Hg is considered higher than normal. Included as a safety measure.

Tear breakup time (TBUT) is used to assess for evaporative dry eye disease. In this measure, TBUT is measured using the keratograph machine. TBUT is recorded as the number of seconds that elapse between the last blink and the appearance of the first dry spot in the tear film. Change is the average of values from 6 and 12 months minus average of values from screening and eligibility confirmation visits.

The purpose of the tear film is to reduce evaporation of natural tears. Assessment of the tear film meniscus is a quantitative measurement of tear film quantity. In this measure, TMH is measured using the keratograph machine. Change is the average of values from 6 and 12 months minus average of values from screening and eligibility confirmation visits.

Change in ocular redness as measured using the keratograph machine. Change is the average of values from 6 and 12 months minus average of values from screening and eligibility confirmation visits. Title of the Scale used to measure outcome: Oculus Keratograph 5M R-scan, Scale Ranges: 0.0-4.0. A lower number indicates a better outcome (less redness).

Tear osmolarity measures the salt content of the tears. Higher the osmolarity indicate more severe dry eye. Change is the average of values from 6 and 12 months minus average of values from screening and eligibility confirmation visits. A lower change score indicates improvement.