Browsing by Author "Akarsu, Cengiz"

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    Effects of moderate smoking on the central visual field
    (Blackwell Publishing, 2004-08) Akarsu, Cengiz; Taner, Pelin; Ergin, Ahmet; Yazıcı, Bülent; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0001-8889-1933; AAA-5384-2020; 7005398015
    Purpose: To investigate whether moderate cigarette smoking has any effects on the central visual field. Methods: This study included 30 healthy, moderate cigarette smokers (10-20 cigarettes per day for at least the past 5 years) and 22 healthy non-smokers. After two training test sessions, all individuals underwent computerized visual field examinations (Humphrey 30-2 Full Threshold Test) with both white-on-white (W-W) perimetry and blue-on-yellow (B-Y) perimetry. One eye of each subject with reliable visual field test results was evaluated. The foveal threshold, mean deviation (MD), pattern standard deviation (PSD), short-term fluctuation (SF), corrected pattern standard deviation (CPSD), glaucoma hemifield test (GHT) and number of significantly depressed points deviating at p < 5%, p < 2%, p < 1% and p < 0.5% on the pattern deviation probability map of the smokers were compared with those of the non-smokers. Results: When the results of W-W perimetry were analysed, the smokers were found to have significantly lower foveal thresholds (p = 0.001) and mean retinal sensitivity (p = 0.02), and higher PSD (p = 0.002) and CPSD (p = 0.01) than the non-smokers. Short-term fluctuation was similar in both groups (p = 0.55). The number of significantly depressed points deviating at p < 5%, p < 2% and p < 1% on the pattern deviation probability map was similar for both groups (p > 0.55). The number of depressed points deviating at p < 0.5% on the pattern deviation probability map was higher for the smokers than for the non-smokers (p = 0.03). The results of B-Y perimetry showed the smokers to have a significantly lower foveal threshold than the non-smokers (p = 0.03). However, there were no significant differences in the global indices of the two groups (p > 0.05). The number of significantly depressed points deviating at p < 5%, p < 2%, p < 1% and p < 0.5% on the pattern deviation probability map was similar in both groups (p > 0.05). No significant difference in GHT was determined with either perimetry for the smokers compared with the non-smokers (p > 0.05). Conclusion: This study suggests that moderate cigarette smoking is associated with both diffuse and localized reductions in retinal sensitivity with W-W perimetry. Only reduction in the foveal threshold was observed with B-Y perimetry, with no hints of diffuse and localized reductions.
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    Silicone intubation with the Ritleng method in children with congenital nasolacrimal duct obstruction
    (Mosby-Elsevier, 2006) Akarsu, Cengiz; Salkaya, Muhsin; Yazıcı, Bülent; Uludağ Üniversitesi/Tıp Fakültesi/Göz Hastalıkları Anabilim Dalı.; 0000-0001-8889-1933; AAA-5384-2020; 7005398015
    Purpose: To evaluate the technical properties and clinical efficacy of bicanalicular silicone intubation with the Ritleng method in children with congenital nasolacrimal duct obstruction. Methods. The Ritleng method was used for lacrimal intubation in 50 eyes of 42 consecutive patients (mean age, 37.3 months). All procedures were done by or under the supervision of one surgeon. The hollow Ritleng probe was inserted via the canaliculus into the inferior meatus. The polypropylene (Prolene) thread-guide, attached to the silicone tube, was advanced through the probe. Either the Prolene emerged from the nose spontaneously or it was retrieved using a hook without visualization. The tube ends were sutured to the nasal wall. Tube removal was planned for 3 months postoperatively. Resolution of signs and symptoms of lacrimal obstruction was assessed. The mean follow-up time was 18.1 months (range, 3 to 48 months). Results. The silicone tube was placed successfully in all eyes except 1 (98%). The mean procedure time was 26 minutes for each eye (range, 15 to 45 minutes). Both Prolene guides spontaneously emerged from the nose in only 8 eyes (16%). In the others, one or both Prolene guides were retrieved with a hook. Inadvertent tube dislodgement occurred in 21% of the eyes and required early tube removal. Success, ie, relief of signs and symptoms, was achieved in 86% of eyes. Conclusions:The Ritleng method of intubation for congenital nasolacrimal duct obstruction yields a high rate of success. Contrary to previous reports, our experience suggests that the surgeon must be prepared to retrieve the Prolene guide from the nose.