Choroidal thickness measurement in highly myopic eyes using SD-OCT.

BACKGROUND AND OBJECTIVE: To measure macular choroidal thickness (CT) using spectral-domain optical coherence tomography (OCT) and to investigate the correlation between CT and age, degree of myopia, and history of macular choroidal neovascularization (CNV). PATIENTS AND METHODS: A cross-sectional study included 187 highly myopic eyes of 187 patients examined between January and December 2010. The choroid was imaged with spectral-domain OCT by changing the reference position from the vitreous to the choroid. CT was measured from the outer border of the hyperreflective line corresponding to the retinal pigment epithelium to the inner scleral border. RESULTS: The mean age was 47.21 ± 14.24 years, the mean spherical equivalent refractive error was -13.66 ± 5.77, and the mean subfoveal CT was 100.71 ± 59.98 µm. CT was correlated negatively with age (P < 10(-3)) and refractive error (P < 10(-3)). Forty-two eyes had a history of CNV, the mean CT was 55.45 ± 24.46 µm, and this was significantly thinner than in eyes without CNV (P < 10(-3)). CONCLUSION: In highly myopic eyes, the choroid is thin and undergoes further attenuation with age and increasing myopia. In addition, these findings suggest that the choroid may play a role in the pathogenesis of CNV.

Bevacizumab injection in patients with age-related macular degeneration associated with poor initial visual acuity.

Purpose. To evaluate functional and anatomic effects of intravitreal bevacizumab in patients with neovascular AMD and initial low visual acuity. Methods. Retrospective case series of 38 eyes with neovascular AMD and initial visual acuity of 20/200 or less, treated with intravitreal bevacizumab injection. Results. Mean followup was 14.1 months ± 7.1 (range: 5 to 24 months). Mean logMAR vision at baseline was 1.38 logMAR ± 0.33, at 6 months was 1.14 logMAR ± 0.37 (P = 0.001) and at 12 months was 1.22 logMar ± 0.33 (P = 0.004). Mean baseline central retinal thickness was 431 µm ± 159.7 at 6 months was 293.43 µm ± 122.79 (P = 10(-4)) and at 12 months was 293.1 µm ± 130 (P = 0.004). Visual acuity improved in both patients with or without prior PDT treatment. Conclusions. Intravitreal bevacizumab injection may increase the chance of visual acuity gain in neovascular AMD even in cases with initial low visual acuity.

Intravitreal injection of triamcinolone combined with bevacizumab for choroidal neovascularization associated with large retinal pigment epithelial detachment in age-related macular degeneration.

PURPOSE: To discuss the effect and outcome of a combined intravitreal triamcinolone acetonide (IVTA) injection with intravitreal bevacizumab (IVB) in treating choroidal neovascularization (CNV) associated with large retinal pigment epithelial detachment (PED) in age-related macular degeneration (AMD). DESIGN: Prospective, consecutive, observational case series. METHODS: Seven eyes (five patients) with CNV associated with large PED in AMD were treated by IVTA (4 mg/ 0.1 ml), followed by a IVB (1.25 mg/0.05 ml) 1 week later. Patients were evaluated for best-corrected visual acuity (BCVA) and optical coherence tomography (OCT) at baseline, at 1 week and every 6 weeks. Fluorescein angiography (FA) and indocyanine green angiography (ICG) were performed at baseline and every 3 months afterwards. Indications for retreatment by combined injection were defined as persistent PED with subretinal and/or intraretinal fluid on OCT. Patients with flattening of the PED and activity leakage demonstrated by OCT underwent subsequent IVB. RESULTS: The mean duration of follow-up was 11 months (range 9-14 months). BCVA at baseline averaged 20/125, and 20/80 at the end of follow-up. FA showed no leakage from the lesion in four eyes at the end of follow-up, and three eyes showed a decrease in leakage. Average central foveal thickness was (CFT) 325.7 microns at baseline and 209.2 microns at the end. The average size of the PED was 2.34 disk diameters (range 1.33-3.25) at baseline, and the PED disappeared in four eyes, while it decreased in size at the end in the remaining three. The subretinal fluid disappeared in all patients at the end. The combined treatment (IVTA with IVB 1 week later) was repeated in four eyes, and the number of IVB after combined injection ranged from one to three. No RPE tear appeared during follow-up. Two eyes developed glaucoma controlled by topical medication. There were no other ocular or systemic complications CONCLUSION: Combined IVB and IVTA therapy seems to be an effective and safe procedure to treat CNV associated with large PED in AMD.

Optical Coherence Tomographic Findings in Berlin's Edema.

PURPOSE: To describe optical coherence tomography (OCT) findings in a patient with Berlin's edema following blunt ocular trauma. CASE REPORT: A 26-year-old man presented with acute loss of vision in his left eye following blunt trauma. He underwent a complete ophthalmologic examination and OCT. Fundus examination revealed abnormal yellow discoloration in the macula. OCT disclosed thickening of outer retinal structures and increased reflectivity in the area of photoreceptor outer segments with preservation of inner retinal architecture. Re-examination was conducted one month later at the time which OCT changes resolved leading to a surprisingly normal appearance. CONCLUSION: OCT can be a useful tool in the diagnosis and follow-up of eyes with Berlin's edema and may reveal ultrastructural macular changes.