Bilberry-containing Capsules for Dry Eye Mitigation

This study investigates whether the oral intake of a bilberry capsule product may relieve dry eye symptoms. Participants will be aged between 20 - 65 years of age, with confirmed diagnosis of dry eye status. The participants will be assessed for several parameters and asked to take 4 bilberry capsules per day for 30 days. The parameters will include ocular surface health, tear volume, tear quality, intraocular pressure, and tear compositions. After the 30 days are completed, the participants will be assessed again for the same parameters.

Inclusion Criteria:aged between 20 and 65 yearswith Schirmer's test results between 5 - 10 mm or Tear Film Break Up Time less than 10 secondsOcular Surface Disease Index more than 25Exclusion Criteria:evident ocular diseases such as cornea disease, cataract, vitreous degeneration, glaucoma, and retinopathy.diabeteshypertensionor other chronic diseases or belong to vulnerable groups(pregnancy woman, prisoner, ethical minorities, economic or educationally disadvantaged subjects, disabled individuals such as those at terminal stage of tumorigenesis, blindness, terminal ill individuals)