Diagnostic Evaluation of the Tear Film

Analysis of the Tear Film Lipid Layer

The objectives of this study are to assess for a difference between normal and dry eye subjects in tear film quality using a diagnostic interferometry device and to determine whether there are associations between tear film quality and dry eye symptoms and signs.

Inclusion Criteria:

• Adults 18 year of age or older
• Willing and able to comply with study exam procedure

Exclusion Criteria:

• Eyelid abnormality or ocular surface condition affecting ability to visualize tear film

• Women who are pregnant or nursing

• Any of the following conditions within specified timeframe prior to study participation:

  1. Instillation of eye drops
  2. Contact lens wear
  3. Use of oil-based facial cosmetics
  4. Swimming in chlorinated pool
  5. Eye examination procedures that may affect the tear film
  6. Participation in another ophthalmic clinical trial