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TL;DR
This narrative review describes several new diagnostic devices for dry eye disease (DED). The central conclusion is that while these tools may aid diagnosis, no single device can replace the comprehensive TFOS diagnostic algorithm.
Life · 7 authors, 1 centre
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This narrative review describes several new diagnostic devices for dry eye disease (DED). The central conclusion is that while these tools may aid diagnosis, no single device can replace the comprehensive TFOS diagnostic algorithm.
This narrative review evaluates the clinical utility of various high-tech diagnostic devices for dry eye disease (DED), including the TearLab Osmolarity System, IDRA, Tearcheck, and others. The authors describe the mechanism and function of each device, such as tear osmolarity measurement, tear film interferometry, and ocular surface imaging. Evidence from cited studies is mixed; for example, one study found a significant overlap in tear osmolarity values between DED patients and healthy controls using the TearLab system, limiting its diagnostic discrimination. Another study found good concordance for the IDRA device. The review notes that while these tools may facilitate diagnosis, the literature presents conflicting and limited findings, and their high cost can limit accessibility. The authors conclude that the complex TFOS algorithm remains irreplaceable and that no single device provides a specific diagnosis.