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Monday, September 15, 2003An eight-year-old boy underwent implantation of a posterior-chamber intraocular lens and a peripheral iridectomy for traumatic cataract. ... At 19 years of age, after having been struck in the right eye, the patient noticed an irregularly shaped pupil. Visual acuity decreased to 20/25. Slit-lamp examination revealed a dislocation of his posterior-chamber intraocular lens into the anterior chamber. The lens was caught anterior to the iris with only the haptics (i.e. the wires that kept the lens in place -ed.) situated behind it. There were no other injuries. Repositioning of the intraocular lens back into the posterior chamber was attempted with the administration of mydriatic drops to the patient while he lay in a supine position. Only partial repositioning of the intraocular lens was achieved, with half of the lens remaining anterior to the iris. The lens position did not change for the next two weeks, and surgical repositioning was planned for the following week. On the weekend before the scheduled surgery, the patient took three consecutive rides on one of the largest roller coasters in Europe. After reaching a height of 73 m and being brought to a speed of 130 km per hour, passengers are exposed to a centripetal force of 4 G. Hours later, the patient discovered that his right pupil had become round. Slit-lamp examination confirmed the complete repositioning of the intraocular lens into the posterior chamber. Roller coasters have also been known to cure vertigo. (Again, archives aren't working. Scroll down to Dec. 2) Amusement parks. Healing power beyond the laughter. For a detailed illustration of the nuts and bolts of lens implants, click here. posted by Sydney on 9/15/2003 07:38:00 AM 0 comments 0 Comments: |
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