RESUMO
To evaluate the prevalence of clinical and subclinical thyroid disorders using thyroid function tests in patients with single and multiple chalazia. A complete ophthalmologic examination and thyroid function tests including thyroid stimulating hormone [TSH], thyroxine [T4] and triiodothyronine [T3] were performed in 60 patients with single chalazia and 50 patients with multiple chalazia, consecutively referred to Poostchi Eye Clinic, Shiraz, Iran and compared with 60 age- and gender-matched control subjects. Mean TSH values were higher in patients with single [3.89 Mu/l] and multiple [4.80 Mu/l] chalazia as compared to controls [3.02 Mu/l] [P= 0.23]. No significant difference was detected for T4 levels between patients with single or multiple chalazia as compared to controls. The prevalence of blepharitis was 18% in patients with single chalazia, 34% in patients with multiple chalazia, both of which were higher than controls [5%] [P<0.001]. The difference between patients with single and multiple chalazia in terms of the prevalence of blepharitis was also significant [P<0.05]. There was no significant difference between patients with single and multiple chalazia in comparison with controls regarding thyroid function tests; however the prevalence of blepharitis in patients with multiple chalazia was higher than patients with single chalazia and both figures were higher than controls
RESUMO
To evaluate the results of laser in situ keratomileusis [LASIK] retreatment in patients with postoperative regression. In a retrospective interventional case series, 153 eyes of 113 patients who had undergone LASIK retreatment for postoperative regression were evaluated. Both initial LASIK and retreatment were performed with a Nidek: EC 5000 excimer laser, and flap was made with a Moria microkeratome. Mean age was 29.63 +/- 2.2 yr [range, 20 to 54 yr] and mean follow-up was 11 months [range, 3 to 34 mth] after the initial surgery and 13.1 months [range, 12 to 18 mth] after retreatment. Retreatment was performed 3-34 months after the primary LASIK. Mean spherical equivalent [SE] was -5.39 +/- 2.69 diopters [D] [range, -1.50 to -14.00 D] before initial LASIK and -1.76 +/- 1.08 D [range, -0.50 to -5.00 D] before retreatment. Mean astigmatism was -1.38 +/- 1.07 D [range, -0.50 to -5.00 D] before initial LASIK and -1.12 +/- 0.50 D [range, -0.50 to -2.50 D] before retreatment. One year after retreatment, mean UCVA was 20/25, and mean SE was -0.29 +/- 0.02 D. Best corrected visual acuity [BCVA] improved in all eyes. Two eyes received more than one retreatment. Twenty eyes had flap wrinkling, 2 eyes had diffuse lamellar keratitis [DLK], and 2 eyes had epithelial ingrowth after the initial LASIK. Four eyes had epithelial ingrowth and 2 eyes developed mild keratectasia after retreatment. LASIK retreatment is a safe and effective option with small amounts of myopia and myopic astigmatism regression. The rate of retreatment is higher in patients with myopic astigmatism and in patients with less than 40 years of age, also the risk of complications in retreatment is higher than the initial LASIK. Refractive changes are more stable after retreatment. The risk of keratectasia is higher in final residual stromal bed thickness less than 250 lam after the reoperation