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Dr Matt Barrett MBBS BSc | Study Medicine Smarter on Instagram: "⚠️ Tap here for the answer! ✅ Spoiler alert: Nasolacrimal duct irrigation Tears are produced by the lacrimal gland and spread across the eye surface… They drain into the puncta (small openings at the inner corners of the eyelids) 👉 the canaliculi (superior and inferior) 👉 lacrimal sac 👉 nasolacrimal duct 👉 nasal cavity at the inferior meatus. Nasolacrimal duct irrigation involves flushing the duct with a saline solution to asse