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Phthisis Bulbi It is a diseased or damaged eyeball that has shrunk and lost function. It is congenital and progressive. It is associated with low intraocular pressure because the ciliary body stops producing aqueous fluid. The atrophies and calcifies, becoming nothing more than a lump of tissue. Phthisis bulbi differs from "ocular occurs from the disease, auditory and tactual modes will need to be developed for the success of the student. atrophy without shrinkage" which is also a stage in the degeneration of severely injured or inflamed eyes. Radiation, trauma, infection, or any other injuries to the eye can cause this disease. An eye with phthisis bulbi may shrink and lose its shape, becoming distorted; the cornea may become scarred and swollen. Cataracts can develop, and the pressure within the eye drops to near zero. Visual System that is Affected Once the intraocular pressure approaches 0 mmHg, the cornea becomes distorted and can develop edema and scarring, and the lens develops cataracts. The degenerating eye becomes soft, atrophic and smaller than normal with a cyclitic membrane, diminished aqueous humor production, and detached ciliary body. Functional Implications Depending upon the severity of the disease, the adaptations that might be needed will vary. The person may need magnification to accomplish school work such as reading and/or math problems. Average or bright light with no glare is necessary for viewing will create less strain and pain on the eyes. If total blindness Treatments Usually the restoration of the eye is not possible and the eye is removed and replaced with a prosthesis. References: (Dohlman & D'Amico) (Cassin & Rubin, 2006, p. 208) (“International prosthetic eye center,” 2010) (Levack, 2007, p. 142) (Spizzichino) (Klintworth) (Robin) Cassin, B., & Rubin, M. (Eds.). (2006). Dictionary of eye terminology (p. 208). Gainesville, Fl: Triad Publishing Company. Retrieved from http://www.faslink.org/fasmain.htm Dohlman, C., & D'Amico, D. (1999, January). Can an eye in phthisis be rehabilitated? A case of improved vision with 1-year follow-up. Retrieved from http://archopht.amaassn.org/cgi/content/full/117/1/123 International prosthetic eye center. (2010). Retrieved from http://www.customartificialeyes.org/ patient-information.php Levack, N. (2007). Low vision: A resource guide with adaptations for students with visual impairments (p. 142). Austin, TX: Texas School for the Bllind and Visually Impaired. Spizzichino, D. (2007, April). Neuroradiology on the net. Retrieved from http://neuroradiologyonthenet.blogsp ot.com/2007_04_01_archive.html Klintworth, G. (n.d.). Phthisis bulbi. Retrieved from http://eyepathologist.com/disease.asp ?IDNUM=309590 Robin, S. (n.d.). What is Phthisis Bulbi Eye Disease? Retrieved from http://www.ehow.com/facts_582787 2_phthisis-bulbi-eye-disease_.html Created by: Ben Davisson