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Causes of epiphora are any that cause either overproduction of tears or decreased drainage of tears, resulting in tearing onto the cheek. [2] This can be due to ocular irritation and inflammation (including trichiasis and entropion) or an obstructed tear outflow tract, which is divided according to its anatomical location (i.e., ectropion, punctal, canalicular or nasolacrimal duct obstruction).
The onset of ocular symptoms are usually preceded by episode of viral or flu-like symptoms such as fever, cough or sore throat (however this is not always the case). Patients can typically present erythema nodosum , livedo reticularis , bilateral uveitis , and sudden onset of marked visual loss associated with the appearance of multiple lesions ...
There are many diseases known to cause ocular or visual changes. Diabetes , for example, is the leading cause of new cases of blindness in those aged 20–74, with ocular manifestations such as diabetic retinopathy and macular edema affecting up to 80% of those who have had the disease for 15 years or more.
Optic nerve in advanced glaucoma disease Glaucoma (right eye) with significant optic disc involvement. 80-year-old man. Optic disc topography. Optic disc topography. Screening for glaucoma is an integral part of a standard eye examination performed by optometrists and ophthalmologists. [ 50 ]
Dry Eye Disease: The Clinician's Guide to Diagnosis And Treatment. Thieme Medical Publishers. ISBN 978-1-58890-412-6. Archived from the original on 24 September 2009. Geerling G, Brewitt H (June 2008). Surgery for the Dry Eye: Scientific Evidence and Guidelines for the Clinical Management of Dry Eye Associated Ocular Surface Disease. S. Karger AG.
The optic nerve is a cable connection that transmits images from the retina to the brain.It consists of over one million retinal ganglion cell axons.The optic nerve head, or optic disc is the anterior end of the nerve that is in the eye and hence is visible with an ophthalmoscope.
(H18.6) Keratoconus — degenerative disease: the cornea thins and changes shape to be more like a cone than a parabole (H19.3) Keratoconjunctivitis sicca — dry eyes (H20.0) Iritis — inflammation of the iris (H20.0, H44.1) Uveitis — inflammatory process involving the interior of the eye; Sympathetic ophthalmia is a subset.
A red eye is an eye that appears red due to illness or injury. It is usually injection and prominence of the superficial blood vessels of the conjunctiva, which may be caused by disorders of these or adjacent structures. Conjunctivitis and subconjunctival hemorrhage are two of the less serious but more common causes.
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