The OSA and IDRA are new instruments for the individual analysis of tear film that allow eye doctors to carry out a quick detailed structural analysis of the tear composition. The systems allow analysis of all the layers (Lipid, Aqueous, Mucin) and Meibomian Glands, allowing for identification of the type of Dry Eye Disease (DED) which helps to identify which treatment is best suited for your patients.LIPID
TEAR MENISCUS HEIGHT MEASUREMENT
Low tear production may result in aqueoustear deficiency (ATD) and cause dry eye symptoms. However, measuring tear volume is difficult since the methods available are invasive and irritating. Reflex tear production can be induced, giving an overestimation of basal tear flow and volume. The tear meniscus height is related to the tear secretion rate and tear stability and is a good indicator of the overall tear volume. The aqueous layer is evaluated through the non-invasive “Tear Meniscus” test and is then classified into different categories.The OSA and IDRA are excellent for measuring upper and lower tear meniscus height in patients with aqueous tear deficiency (ATD) dry eye. The result of this exam is comparable to the Schirmer’s Tear Test 1 (STT1), with the difference that it is non-invasive and lasts 3 seconds instead of several minutes.