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The valve of Hasner, located at the distal end of the nasolacrimal duct, prevents retrograde reflux of air, mucous, and food particles from the nose into the eye. Figure 1. The nasolacrimal drainage system. Vaughan & Asbury's General Ophthalmology, 18ed. Chapter 1. "Anatomy & Embryology of the Eye" - Modified figure used with permission More @Wikipedia
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- Nasolacrimal Stents: An Introductory Guide - University of IowaThe valve of Hasner, located at the distal end of the nasolacrimal duct, prevents retrograde reflux of air, mucous, and food particles from the nose into the eye. Figure 1. The nasolacrimal drainage system. Vaughan & Asbury's General Ophthalmology, 18ed. Chapter 1. "Anatomy & Embryology of the Eye" - Modified figure used with permission
- Enucleation and Evisceration: What to Expect - University of IowaNote that the implant is now visible behind the tissues of the eye socket Whether because of trauma, cancer, or a variety of other eye diseases, patients who have had an eye removed overwhelmingly report improved self-confidence, pain relief, and an increased ability to function in their daily lives (Videos 6 and 7).
- Enophthalmos Wedge Implant - University of IowaThe enophthalmos wedge implant is inspected and oriented. These implants come in right, left, medium, and large sizes. The wedge implant is placed into the subperiosteal space. This effectively adds volume posterior to the orbital implant. The implant is then fixated to the inferior orbital rim with a screw.
- Orbital floor fracture repair with placement of Supremid implantThe implant is fixated to the inferior orbital rim with one or two titanium screws. The transconjunctival incision is then closed with interrupted 7-0 vicryl suture. The cantholysis is repaired by performing a lateral tarsal strip procedure which fixates the lateral canthal tendon to the lateral orbital rim at the level of Whitnalls tubercle.
- Enucleation with implant - University of IowaThis video demonstrates an enucleation with placement of a porous polyethylene implant. The patient in this video had a choroidal melanoma. A 360 degree conjunctival peritemy is performed with Westcott scissors. Dissection is then performed in each of the quadrants between the rectus muscles with Stevens scissors.
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