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Three cases of decentered laser in situ keratomileusis were successfully treated with the topographically supported customized ablation.

Purpose: To compare the visual function and the answers to a questionnaire of quality of life of patients wearing a progressive contact lens or eyeglasses., Methods: The Focus Progressive contact lens had been fitted in 35 patients with far visual acuity with progressive-addition eyeglasses equal to zero (log MAR) and near J1 (Jaeger). The far and near visual acuities and the measurement of contrast sensitivity were compared when the patients were wearing the eyeglasses or the contact lens and the patients' results of the scores of the quality of life questionnaire (NEI VFQ-25) were analyzed statistically considering the type of ametropy and the age., Results: The far and near visual acuities and the contrast sensitivity measurement were worse with the contact lens than with eyeglasses. The answers to the questionnaire did not differ when were comparing the same patients wearing eyeglasses or contact lens, no matter the type of ametropy. The myopic and the hyperopic subgroups had worse answers to the quality of life questionnaire when corrected with the contact lens than with eyeglasses, both with age equal to or less than their median., Conclusions: The visual function was worse with the contact lens. The type of ametropy did not influence the answers to the quality of life questionnaire considering the optical correction, but age did.

Purpose: To verify the topographical alterations in enucleated pig eye cornea after radiofrequency application., Methods: A prototype radiofrequency modulator with 10 different energy possibilities was used. For each energy we used 10 enucleated pig eyes that were topographed before and after applying radiofrequency, following a nomogram with 8 spots in step one, 16 spots in step 2, and 24 spots in step 3, in a total of 3 steps for each eye, 300 applications and 400 topographies., Results: Corneal curvature variation occurred after radiofrequency applications for all utilized selections, demonstrated by the mean variation of initial KM (minimum dioptry) and final KM (35.78 and 37.37 respectively) with 1.59 dioptries of variation (p<0.001). The energy that demonstrated more stability was 0.625 W/s (65 degrees C)., Conclusion: The obtained topographic values demonstrated that the central corneal curvature increased after radiofrequency application, and the higher the energy and the more spots used, more curved became the cornea, despite homogeneity.

Purpose: To evaluate the fitting and use of contact lens in patients submitted to refractive surgery., Methods: This was a retrospective study in 53 patients submitted to refractive surgery who later started to use contact lens, from 1999 to 2003. The parameters were: previous ametropia, refractive surgery procedure, ametropia after surgery, postoperative spherical equivalent, postoperative keratometry, base curve of fitted contact lens, contact lens design, final visual acuity with spectacles after surgery, final visual acuity with contact lens, complications and the reason for stopping the use. The follow-up of patients ranged from 1 month to 84 months (average of 42.5 months)., Results: Of 53 evaluated patients, 19 patients had undergone LASIK (Laser Assisted in Situ Keratomileusis), 29 patients had undergone RK (radial keratotomy), 4 patients had undergone PRK (photorefractive keratectomy) and in one patient it was not possible to know which surgery was performed. 61.29% of the patients (57 eyes of a total of 93 eyes) were fitted with rigid gas-permeable lenses. There was an improvement of visual acuity in 60.21% of the cases (VA>20/40), with few complications., Conclusion: Due to the great number of performed refractive surgery, an increase in the number of patients unhappy with the postoperative result is expected, and for these patients, many times the use of contact lens is the best option. The fitting of contact lenses after refractive surgery demands knowledge, dedication and has good results principally regarding better visual acuity.