Dry Eye Syndrome and Acupuncture

Deep Dive

From a western clinical lens, dry eye syndrome is a multifactorial disease marked by tear film instability, hyperosmolarity, low-grade inflammat... From a western clinical lens, dry eye syndrome is a multifactorial disease marked by tear film instability, hyperosmolarity, low-grade inflammation, and, in many patients, neurosensory abnormalities that amplify dryness and pain. Clinicians quantify symptom burden with instruments like the OSDI and measure tear function with Schirmer testing, fluorescein tear breakup time (TBUT), and ocular surface staining. First-line management emphasizes risk-factor modification (screen breaks, humidification, medication review) and topical lubrication. For inflammatory phenotypes, cyclosporine or lifitegrast can reduce surface cytokine activity, while lid hygiene and warm compresses address meibomian gland dysfunction. Yet many patients remain symptomatic, prompting exploration of adjunctive modalities such as acupuncture. In controlled trials, acupuncture has been compared with artificial tears, sham procedures, and combined regimens. Outcomes commonly include OSDI, TBUT, Schirmer, and staining scores. Meta-analyses generally report that acupuncture, particularly as an add-on to standard care, can yield clinically meaningful improvements in symptoms and modest gains in TBUT and Schirmer. However, results versus sham acupuncture are mixed, reflecting challenges in blinding and the possibility that nonspecific effects (attention, expectation, sensory stimulation) contribute to benefit. Heterogeneity in point selection, treatment frequency, and patient phenotypes limits pooling and downgrades certainty to low-to-moderate. Physiologically, plausible mechanisms include modulation of trigeminal–autonomic reflexes that enhance lacrimal secretion, reduction of neurogenic inflammation, and improved periocular circulation—pathways congruent with contemporary understanding of ocular surface disease. Safety profiles from large surveys suggest acupuncture is generally safe when provided by licensed practitioners using sterile technique; around the eyes, precise training and conservative depth are essential. In practice, acupuncture may be considered as an adjunct for patients with persistent symptoms despite conventional therapy, with expectations set for gradual improvement over weeks and the understanding that response is variable and long-term durability remains under study.