PMC3508742_01
Fluorescein angiography. Case 1: macular edema without macular ischemia. Case 2: macular edema associated with ischemia of the macular region.
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Examination of the right fundus revealed flame-shaped intraretinal hemorrhages in all four quadrants, while the fluorescein angiography (Figure 1) and electroretinographic findings (a marked decrease of the b wave amplitude) were compatible with a diagnosis of ischemic CRVO.
Changes in mean macular thickness (A-C) after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. (A) Case 1: mean macular thickness within the central 4 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the central 4 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months. (B) Case 1: mean macular thickness within the 10 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the 10 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months. (C) Case 1: mean macular thickness within the 20 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the 20 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months.
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The mean macular thickness within the central 4, 10, and 20 degree fields was reduced at 3 months after IVTA, but was increased again at 6 months compared with 3 months (Figure 2).
Changes in best-corrected visual acuity after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. Case 1: best-corrected visual acuity is improved after 3 and 6 months. Case 2: best-corrected visual acuity is not improved after 3 or 6 months.
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Visual acuity did not improve after either 3 or 6 months (Figure 3).
Changes in macular sensitivity (A-C) after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. (A) Case 1: mean macular sensitivity within the central 4 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the central 4 degree field is not improved after 3 or 6 months. (B) Case 1: mean macular sensitivity within the 10 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the 10 degree field is almost unchanged after 3 and 6 months. (C) Case 1: mean macular sensitivity within the 20 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the 20 degree field is almost unchanged after 3 and 6 months.
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Moreover, mean macular sensitivity within the central 4, 10, and 20 degree fields showed little change after 3 or 6 months (Figures 4 and 5).
Macular sensitivity map obtained by microperimetry.. Notes: Macular sensitivity maps were obtained using the Micro Perimeter 1 before intravitreal injection of triamcinolone acetonide, as well as at 3 and 6 months after triamcinolone acetonide. Changes in macular sensitivity are shown in Figure 3.
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Moreover, mean macular sensitivity within the central 4, 10, and 20 degree fields showed little change after 3 or 6 months (Figures 4 and 5).
PMC3508742_02
Fluorescein angiography. Case 1: macular edema without macular ischemia. Case 2: macular edema associated with ischemia of the macular region.
opth-6-1901f1.jpg
PMC3508742_02_opth-6-1901f1.jpg
f1-opth-6-1901
Examination of the right fundus revealed flame-shaped intraretinal hemorrhages in all four quadrants, while the fluorescein angiography (Figure 1) and electroretinographic findings (a marked decrease of the b wave amplitude) were compatible with a diagnosis of ischemic CRVO.
Changes in mean macular thickness (A-C) after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. (A) Case 1: mean macular thickness within the central 4 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the central 4 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months. (B) Case 1: mean macular thickness within the 10 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the 10 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months. (C) Case 1: mean macular thickness within the 20 degree field is reduced after 3 and 6 months. Case 2: mean macular thickness within the 20 degree field is reduced after 3 months, but increased at 6 months compared with at 3 months.
opth-6-1901f2b.jpg
PMC3508742_02_opth-6-1901f2b.jpg
f2-opth-6-1901
The mean macular thickness within the central 4, 10, and 20 degree fields was reduced at 3 months after IVTA, but was increased again at 6 months compared with 3 months (Figure 2).
Changes in best-corrected visual acuity after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. Case 1: best-corrected visual acuity is improved after 3 and 6 months. Case 2: best-corrected visual acuity is not improved after 3 or 6 months.
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PMC3508742_02_opth-6-1901f3.jpg
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Visual acuity did not improve after either 3 or 6 months (Figure 3).
Changes in macular sensitivity (A-C) after intravitreal injection of triamcinolone acetonide in two patients with branch retinal vein occlusion and macular edema. (A) Case 1: mean macular sensitivity within the central 4 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the central 4 degree field is not improved after 3 or 6 months. (B) Case 1: mean macular sensitivity within the 10 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the 10 degree field is almost unchanged after 3 and 6 months. (C) Case 1: mean macular sensitivity within the 20 degree field is increased after 3 months, but decreased at 6 months compared with at 3 months. Case 2: mean macular sensitivity within the 20 degree field is almost unchanged after 3 and 6 months.
opth-6-1901f4.jpg
PMC3508742_02_opth-6-1901f4.jpg
f4-opth-6-1901
Moreover, mean macular sensitivity within the central 4, 10, and 20 degree fields showed little change after 3 or 6 months (Figures 4 and 5).
Macular sensitivity map obtained by microperimetry.. Notes: Macular sensitivity maps were obtained using the Micro Perimeter 1 before intravitreal injection of triamcinolone acetonide, as well as at 3 and 6 months after triamcinolone acetonide. Changes in macular sensitivity are shown in Figure 3.
opth-6-1901f5.jpg
PMC3508742_02_opth-6-1901f5.jpg
f5-opth-6-1901
Moreover, mean macular sensitivity within the central 4, 10, and 20 degree fields showed little change after 3 or 6 months (Figures 4 and 5).