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    Choroidal neovascularization secondary to ocular penetration during retrobulbar anesthesia and its treatment
    (Medknow Publications, 2017) Dikci S.; Yilmaz T.; Gök Z.; Demirel S.; Genç O.
    Retrobulbar anesthesia is still used before ocular surgery; however, it has various complications including ocular penetration. The penetration/perforation of the globe can cause complications such as endophthalmitis, retinal detachment, and scotoma. Choroidal neovascularization (CNV) is rarely seen, following choroidal rupture in penetrating eye injuries. Here, we present a patient who underwent a pars plana vitrectomy for vitreous hemorrhage secondary to ocular penetration during a retrobulbar injection for cataract surgery. This patient later developed CNV at the penetration site during follow-up. Physicians should remember that CNV can occur as an unusual late complication of ocular penetration during retrobulbar anesthesia. © 2017 Oman Ophthalmic Society | Published by Wolters Kluwer - Medknow.
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    Comparison of silicone oil removal using 23 gauge and 20 gauge sclerotomy systems
    (2011) Do?anay S.; Koç B.; Çankaya C.; Demirel S.
    Purpose: To compare 23 and 20 Gauge (G) sclerotomy methods for silicone oil removal. Materials and Methods: Patients that had undergone pars plana vitrectomy (PPV) and received silicone oil as intraocular tamponade material because of retinal detachment and the complications of proliferative diabetic retinopathy were divided into two groups: those undergoing removal of silicone oil through 20 G sclerotomy (Group 1; 39 patients) and those undergoing removal of silicone oil through 23 G transconjunctival sclerotomies (Group 2; 34 patients). The groups were evaluated with regard to postoperative changes in BCVA and IOP, and complications that occurred during and after surgery. Results: In the postoperative follow-up, the mean values of BCVA on the first day, at the first week, and at the first, third, and sixth months were LogMAR 1.2±1.0, 1.0±1.0, 0.96±0.9, 0.9±0.85, and 0.86±0.8, respectively, in Group 1, and LogMAR 1.2±1.2, 0.96±1.0, 0.94±0.9, 0.9±0.94, and 0.9±0.94, respectively, in Group 2. In the postoperative follow-up, the mean values of IOP on the first day, at the first week, and at the first, third, and sixth months were 13±1.7, 14±2.6, 14±1.7, 14±1.6, and 15±3.2 mmHg, respectively, in Group 1, and 11±3.5, 12±1.8, 13±1.8, 13±2.0, and 14±2.6 mmHg, respectively, in Group 2. No patients from the Group 1 developed hypotonia on the first day after surgery, whereas hypotonia was determined in 3 patients (8.8%) from Group 2. During the postoperative checkups, re-detachment was found in 4 patients (10.2%) from Group 1, recurring vitreous hemorrhage (VH) was found in 3 patients (7.6%) from Group 1, re-detachment occurred in 2 patients (5.8%) from Group 2, and recurring VH occurred in 2 patients (5.8%) from Group 2. Conclusion: Silicone oil removal using a 23 G transconjunctival sutureless pars plana vitrectomy and the 20 G pars plana vitrectomy system shows similar characteristics. However, the 23 G transconjunctival system provides additional benefits such as the a vantages of a closed system, the conjunctiva is not opened, and the complications due to the sutures are reduced.
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    Macular injury due to aiming laser beams: Two case reports
    (Gazi Eye Foundation, 2017) Dikici S.; Yilmaz T.; Demirel S.; Çavdar M.; Genç O.
    Nowadays, lasers are used in many areas such as medicine, industry, laboratory research, entertainment and the military. Military lasers are generally used for such tasks as sensitive distance measurements and marking the targets. The retina is very sensitive to the laser beams and temporary or permanent vision loss can occur depending on the power, wavelength of the laser beams and duration of exposure. Lasers that showing photochemical, mechanical or thermal effects can lead to complications such as chorioretinal scarring, macular hole, choroidal neovascularization and preretinal membrane formation. There is not effective and proven treatment of retinopathy resulting from the laser beams, therefore it is important to avoid exposure to the laser beam. It was reported two security personel with macular injury exposed to the laser beams used in firearms and in this context it was aimed to give information about the laser and to discuss the its effects on the retina in this study. © 2017 Gazi Eye Foundation. All rights reserved.