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  2. Punctal plug - Wikipedia

    en.wikipedia.org/wiki/Punctal_plug

    A punctal plug, also known as tear duct plug or lacrimal plug, is a small medical device that is inserted into the tear duct (puncta) of an eye to block the duct. This prevents the drainage of liquid from the eye. They are used to treat dry eye. Artificial tears are usually still required after punctal plug insertion. [1]

  3. Punctoplasty - Wikipedia

    en.wikipedia.org/wiki/Punctoplasty

    Punctoplasty is a surgical procedure to restore proper drainage of tears [1] when the lacrimal punctum (puncta lacrimalia) becomes blocked in one or both eyes.. If a blockage is present in the puncta, doctors may suggest a procedure called punctoplasty, performed to widen the drain opening.

  4. Recurrent corneal erosion - Wikipedia

    en.wikipedia.org/wiki/Recurrent_corneal_erosion

    A punctal plug may be inserted into the tear duct by an optometrist or ophthalmologist, decreasing the removal of natural tears from the affected eye. [8] The use of contact lenses may help prevent the abrasion during blinking lifting off the surface layer and uses thin lenses that are gas permeable to minimise reduced oxygenation.

  5. Nasolacrimal duct - Wikipedia

    en.wikipedia.org/wiki/Nasolacrimal_duct

    Persons with dry eye conditions can be fitted with punctal plugs that seal the ducts to limit the amount of fluid drainage and retain moisture. During an ear infection, excess mucus may drain through the nasolacrimal duct in the opposite way tears drain. [citation needed] In humans, the tear ducts in males tend to be larger than the ones in ...

  6. List of instruments used in ophthalmology - Wikipedia

    en.wikipedia.org/wiki/List_of_instruments_used...

    Nettleship's punctum dilator: to dilate the lacrimal punctum of the lacrimal apparatus of the eye for syringing or operations Cystotome: a 26 gauge needle bent twice used for incising the anterior capsule of the lens in lens extraction Wire vectis: a loop of wire attached to a stack used to extract cataract affected lenses Irrigating vectis

  7. Epiphora (medicine) - Wikipedia

    en.wikipedia.org/wiki/Epiphora_(medicine)

    Punctal irrigation is also required. In infants with nasolacrimal defects, a nasolacrimal duct probe is used and a tube replacement, either temporary (Crawford) or permanent (Jones), is carried out. A surgical procedure called a dacryocystorhinostomy is done to join the lacrimal sac to the nasal mucosa in order to restore lacrimal drainage.

  8. Lattice corneal dystrophy - Wikipedia

    en.wikipedia.org/wiki/Lattice_corneal_dystrophy

    There have been many cases in which teenage patients have had the procedure, which accounts for the change in severity of the condition from person to person. [ citation needed ] Although people with lattice dystrophy have an excellent chance for a successful corneal transplantation , the disease may also arise in the donor cornea in as little ...

  9. Nasolacrimal duct obstruction - Wikipedia

    en.wikipedia.org/wiki/Nasolacrimal_duct_obstruction

    Involutional stenosis is probably the most common cause of nasolacrimal duct obstruction in older people. It affects women twice as frequently as men. Although the inciting event in this process is unknown, clinicopathologic study suggests that compression of the lumen of the nasolacrimal duct is caused by inflammatory infiltrates and edema.