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Öğe Clinical and Surgical Features of Eyes With Retained Lens Fragments During Cataract Surgery and Treatment Results at 6 Months(2009) Kerimoğlu, H.; Kamış, Ü.; Adam, M.; Özkağnıcı, A.; Gündüz, K.; Okudan, S.Purpose: To determine the clinical and surgical features of eyes with retained lens fragments during cataract surgery managed by pars plana vitrectomy (PPV) and to evaluate the treatment results at 6-month follow-up. Mateirals and Methods: Medical records of 29 patients who underwent PPV for retained lens fragments and were followed-up at least for 6 months between June 2005 and December 2008 were reviewed. Results: Retained lens fragments were removed with PPV and phacofragmantation in 24 eyes and with a vitreous cutter in 5 eyes. Before PPV, 9 eyes had intraocular lenses (IOLs) at the ciliary sulcus, 2 had IOLs subluxated into the vitreous, and 1 had a posterior chamber IOL located in the anterior chamber. Fourteen eyes had IOL implantation into the ciliary sulcus during the same session as PPV. Of the 6 eyes that were left aphakic during PPV, 2 had IOLs implantation to the ciliary sulcus and 4 had scleral fixated IOLs within the subsequent 2-month period. One eye had trabeculectomy 4 weeks after PPV and 1 eye had rhegmatogenous retinal detachment 7 weeks after PPV. At the 6-month follow-up, corrected visual acuity was better in eyes operated on within 3 days of cataract surgery compared to eyes operated more than 3 days after cataract surgery (0.64±0.27; 0.43±0.26; respectively, p=0.04). Conclusions: PPV is an effective and safe surgical treatment in eyes with retained lens fragments. The improvement in visual acuity is better in eyes operated on within 3 days of cataract surgery.Öğe Corneal crosslinking treatment for keratoconus in children with vernal keratoconjunctivitis(WILEY, 2017) Bozkurt, B.; Mesen, A.; Dilek, R.; Okudan, S.[Abstract not Available]Öğe Effect of Duration of Macular Detachment on Early Visual Acuity Results in Macula of Rhegmatogenous Retinal Detachments(2009) Kerimoğlu, H.; Adam, M.; Turan, M.; Öztürk, B.; Pekel, H.; Okudan, S.Purpose: To evaluate the effect of the duration of macular detachment on best corrected visual acuity in eyes with rhegmatogenous retinal detachment treated with pneumatic retinopexy. Materials and Methods: The charts of patients with rhegmatogenous retinal detachment who had macular detachment within 2 weeks period and treated succesfully with pneumatic retinopexy between May 2006 and May 2009 in our clinic were reviewed retrospectively. 47 eyes were grouped according to their duration of macular detachment as eyes treated within 1-5 days (21 eyes), 6-10 days (14 eyes) and 11-14 days (12 eyes) and also grouped as eyes treated within first week (26 eyes) and second week (21 eyes) and the best corrected visual acuity 3 months after the operation was compared among the groups. Results: There was a significant difference between visual acuities of the 3 groups divided as 1-5, 6-10 and 11-14 days according to duration of macular detachment (p<0.001, Kruskal Wallis test). The difference between visual acuities of eyes treated within first week (0.56±0.19) and second week (0.32±0.13) was also significant (p<0.001, Mann-Whitney test). Conclusion: Postoperative visual acuity decreases while the duration of macular detachment increases in eyes treated with pneumatic retinopexy assessed in 3 and 2 time periods. Duration of macular detachment is an important prognostic factor for the prediction of postoperative visual acuity.Öğe Meibomian Gland Dysfunction and Tear Film Abnormalities in Rosacea(LIPPINCOTT-RAVEN PUBL, 1995) Zengin, N.; Tol, H.; Gündüz, K.; Okudan, S.; Balevi, S.; Endoğru, HIn order to determine the relationship between meibomian gland dysfunction and tear film abnormalities in rosacea, tear film flow and stability and meibomian gland function were assessed in 43 consecutive patients. Schirmer, tear film break-up time, and meibomian gland function values in patients with ocular rosacea (n=28) were found to be significantly decreased as compared with those of the patients with only cutaneous involvement and control patients (p>0.05). In patients with dermatologic rosacea (n=15) these values were not different from those of the age- and sex-matched controls (p>0.05). The effects of tetracycline and meibomian gland expression therapy were also investigated in patients with ocular rosacea. Neither meibomian gland expression therapy nor tetracycline administration had beneficial effects on decreased tear secretion, but tetracycline improved the break-up time values. Our findings showed a positive relationship between tear film abnormalities and meibomian gland dysfunction in patients with rosacea. Decreased tear secretion in patients with ocular rosacea would seem to be a result of structural changes secondary to meibomian gland dysfunction, and short break-up time might be due to an abnormal meibum composition.Öğe A Preliminary Trial to Determine Whether Prevention of Dark Adaptation Affects the Course of Early Diabetic Retinopathy(Nature Publishing Group, 2010) Arden, G. B.; Gündüz, M. K.; Kurtenbach, A.; Völker, M.; Zrenner, E.; Gündüz, S. B.; Kamis, Ü.; Öztürk, B. T.; Okudan, S.This study was designed to determine whether a new form of treatment of diabetic retinopathy (DR) was acceptable to patients and whether reduction in the maximal activity of rods in diabetes could affect the progress of DR. Methods In 12 patients, trans-lid retinal illumination of one eye was employed during sleep to prevent the depolarisation of rods and thus reduce their metabolic activity. Techniques A headband was used to place a source of chemical light over one eye, with its fellow as a control. Measurements Colour contrast thresholds were measured before and after a period of treatment in treated eyes, and the changes were compared to those in untreated fellow eyes, and areas of 'dark retinal anomalies' (microaneurysms, dot haemorrhages) were measured at the same time points. Results Patients found this intervention to be acceptable, and no adverse effects were noted. In the majority of cases, and for each outcome measure, the treated eyes improved relative to their fellows. The intervention significantly reduced the tritan thresholds in treated eyes relative to their fellows (P = 0.03), and the area of dark retinal anomalies decreased in treated eyes and increased in untreated eyes, with a similar probability. Conclusions The study showed that this intervention is safe. Although the study was not powered to study efficiacy, the results are promising and consistent with other reports that indicate the retina in DR is suffering from hypoxia; however, further trials should be undertaken.
