Optic Nerve Cysticercosis: Case Report and Review of Current Management
The authors present a case of optic nerve cysticercosis in a 32-year-old patient who presented with sudden blurring of vision in the left eye and a transient visual improvement on systemic steroids. The ocular findings were unremarkable other than a relative afferent pupillary defect (RAPD). An ultrasound of the orbit, CT and MRI scans revealed a cystic lesion in the orbital portion of the optic nerve close to the eyeball. A presumed diagnosis of optic nerve cysticercosis was made on the basis of imaging and a positive serum ELISA. The patient improved dramatically on a 4-week therapeutic trial of albendazole and oral steroids. The post-treatment ultrasound and CT scan showed an involution of the cyst with some residual thickening of the optic nerve.
Results of Laser in situ Keratomileusis for Myopia of -10 to -19 Diopters With a Technolas 217 Laser
PURPOSE: To evaluate the effectiveness, predictability, and safety of laser in situ keratomileusis (IASIK) for correcting myopia greater than -10.00 D.
METHODS: Sixty-five eyes of 37 patients with myopia greater than -10.00 D underwent LASIK. Patients were evaluated on day 1, 1 week, 1, 3, and ß months after surgery. Parameters evaluated were uncorrected visual acuity (UCVA) and best spectacle-corrected visual acuity (BSCVA), residual refractive error, regression of correction, and presence of any complication.
RESULTS: Mean preoperative BSCVA was 0.745 ± 0,234, which improved to 0.8070 ± 0.237 postoperatively. The average preoperative UCVA was 0.022 ± 0.02; postoperative UCVA at 6 months was 0.536 ± 0,255. UCVA of 20/40 or better was achieved in 58% (38 eyes) and 20/20 or better in 26% (17 eyes). The average refractive error before LASIK was -12.64 ± 2.16 D (range -10.00 to -19.00 D). Mean residual refractive error 1 week following LASIK was -0.63 ± 1.36 D, which regressed to a mean -1.78 ± 2.08 D at the end of 6 months. Nineteen eyes (29%) were within ±0.50 D of intended refractive correction.
CONCLUSION: LASlK was partially effective in the correction of high myopia. An initial overcorrection may be programmed to offset the effect of refractive regression. [J Refract Surg 2003;19:44-47]