Questions Ocular Injuries
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| What is true about a blowout fracture of the orbital floor? | May entrap inferior rectus muscle and cause diplopia, May cause enophthalmos, parasathesia of the upper lid due to infraorbital nerve, and may cause enophthalmos.
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| What would occur in a blowout fracture of the orbital floor if there was also a significant retrobulbar hemorrhage present? | May cause proptosis.
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| A fracture of the medial wall may involve what bone? | Ethmoid bone
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| A small abrasion of the cornea usually heals in _________ days/hours? | 24hours
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| If a metal foreign body is not completely removed from the cornea, what may occur? | Rust ring with corneal edema and necrosis of tissue
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| A tear-drop pupil is indicative of what? | Perforated cornea with iris incarceration
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| Blunt trauma to the globe may result in what (7)? | Tear of the iris- iriodialysis/ Hyphema / Angle Recession/ Paralysis of iris- pupil / Cataract/ Subluxation lens with lenticulodonesis/ Glaucoma years later
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| What is iridodinesis? | Tremulousness of the iris due to lens dislocation
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| Angle recession may result in what and when? | Glaucoma many years later (10-20)
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| Alkalai burns should be irrigated until what? | PH of conjunctiva is normal 7.4
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| Define symblepharon. | Adhesion of the conjunctiva to another area of the conjunctiva.
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| What causes snow blindness? | UV radiation from reflected light off snow
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| What is the name of the topical anesthetic to relieve eye pain? | Proparacaine (Ophthaine is trade name)
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| What is the name of the drug that relieves spasms of the iris and ciliary body? | Cycloplegics (Cyclopentolate for short action; Atropine for long action)
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| A patient who presents with firm, swollen lids, proptosis, with ecchymosis who has had eye surgery or blunt trauma may have? | Retrobulbar hemorrhage
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| What complication is a concern for a patient who presents with firm, swollen lids, proptosis, with ecchymosis who has had eye surgery or blunt trauma? | Optic nerve compression and loss of vision
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| What is the name of the test for a leaking anterior chamber wound? | Seidel Fluorescein dye is used
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| A solar retinopathy is caused by what? | Looking at the sun.
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| What is a commotio retina? | Edema of the retina from a blunt trauma. Retina appears whitish and opaque.
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