Abstract
Purpose
To report the effects and intraocular pressure (IOP) results of intravitreal injection of bevacizumab alone compared with intravitreal low-dose bevacizumab combined with low-dose triamcinolone injection in patients with central retinal vein occlusion. Methods: In total, 40 eyes of 40 patients diagnosed with central retinal vein occlusion were evaluated. Of these, 20 eyes of 20 patients were injected with intravitreal bevacizumab (1.25 mg/0.05 mL), and 20 eyes of 20 patients were injected with low-dose bevacizumab (0.625 mg/0.025 mL) combined with low-dose triamcinolone (1 mg/0.025 mL). The best corrected visual acuity (BCVA), central macular thickness (CMT), and IOP of treated eyes were measured before injection and at 1 month, 2 months, and 3 months after injection.
Results
In both the intravitreal bevacizumab and the low-dose bevacizumab combined with low-dose triamcinolone groups, CMT decreased significantly at 1 month, 2 months, and 3 months after injection (p < 0.05). In addition, in both groups, neither IOP nor BCVA decreased significantly at 1 month, 2 months, or 3 months after injection (p > 0.05). The BCVA, IOP, and CMT at 1 month, 2 months, and 3 months after injection showed no significant differences between the intravitreal bevacizumab group and the low-dose bevacizumab combined with low-dose triamcinolone group (p > 0.05).
Conclusions
The CMT of both groups decreased significantly, and BCVA of both groups increased significantly in patients with central retinal vein occlusion. Injection of low-dose intravitreal bevacizumab combined with low-dose intravitreal triamcinolone may be useful for the treatment of central retinal vein occlusion.
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Table 1.
Variable | IVB | IVB + IVTA | p-value |
---|---|---|---|
Total number of patients (eye) | 20 (20) | 20 (20) | |
Mean age (years) | 53.6 ± 16.8 | 55.5 ± 11.9 | 0.781* |
Sex (male:female) | 11:9 | 10:10 | 1.000† |
Duration from onset to treatment ± SD (weeks) | 14.23 ± 9.5 | 17.6 ± 14.9 | 0.241* |
Lens | |||
Phakic | 13 | 12 | 0.965† |
Pseudophakic | 7 (47%) | 8 (53%) | 0.935† |
Table 2.
Baseline | 3 months FU | p-value | |
---|---|---|---|
BCVA (log MAR) | |||
IVB Group | 1.184 ± 0.704 | 0.859 ± 0.516 | 0.004† |
IVB + IVTA Group | 1.178 ± 0.632 | 0.825 ± 0.357 | 0.004† |
p-value | 0.975* | 0.935* | |
CMT (μm) | |||
IVB Group | 783.82 ± 112.61 | 624.47 ± 82.58 | 0.048† |
IVB + IVTA Group | 871.74 ± 97.23 | 687.06 ± 87.35 | 0.043† |
p-value | 0.588* | 0.671* | |
IOP (mm Hg) | |||
IVB Group | 14.20 ± 3.11 | 14.75 ± 3.32 | 0.845† |
IVB + IVTA Group | 15.14 ± 7.21 | 15.59 ± 7.75 | 0.844† |
p-value | 0.872* | 0.824* |
Table 3.
IVB Group | IVB + IVTA Group | p-value | |
---|---|---|---|
BCVA (log MAR) | |||
Baseline | 1.184 ± 0.704 | 1.178 ± 0.632 | 0.975* |
Post-op 1 month | 0.844 ± 0.571 (0.003†) | 0.877 ± 0.471 (0.026†) | 0.942* |
Post-op 2 months | 0.807 ± 0.654 (0.003†) | 0.791 ± 0.544 (0.003†) | 0.967* |
Post-op 3 months | 0.859 ± 0.516 (0.004†) | 0.825 ± 0.357 (0.004†) | 0.895* |
Mean changes of BCVA | |||
Post-op 1 month | -0.294 ± 0.295 | -0.351 ± 0.391 | 0.667* |
Post-op 2 months | -0.328 ± 0.313 | -0.443 ± 0.323 | 0.384* |
Post-op 3 months | -0.277 ± 0.274 | -0.355 ± 0.411 | 0.597* |
Table 4.
IVB Group (n = 20) | IVB + IVTA Group (n = 20) | p-value | |
---|---|---|---|
Mean CMT (μm) | |||
Baseline | 783.82 ± 112.61 | 871.74 ± 97.23 | 0.079* |
Post-op 1 month | 348.23 ± 72.57 (0.011†) | 304.21 ± 67.84 (0.009†) | 0.157* |
Post-op 2 months | 571.75 ± 92.54 (0.024†) | 491.15 ± 95.51 (0.016†) | 0.081* |
Post-op 3 months | 624.47 ± 82.58 (0.048†) | 687.06 ± 87.35 (0.043†) | 0.198* |
Mean changes of CMT | |||
Post-op 1 month | -435.59 ± 84.45 | -567.53 ± 79.55 | 0.082* |
Post-op 2 months | -212.07 ± 62.28 | -380.59 ± 67.49 | 0.114* |
Post-op 3 months | -159.35 ± 57.42 | -187.68 ± 97.94 | 0.132* |
Table 5.
IVB Group (n = 20) | IVB + IVTA Group (n = 20) | p-value | |
---|---|---|---|
Mean IOP (mm Hg) | |||
Baseline | 14.20 ± 3.11 | 15.14 ± 7.21 | 0.412* |
Post-op 1 month | 14.27 ± 3.07 (0.635†) | 17.84 ± 6.47 (0.251†) | 0.092* |
Post-op 2 months | 14.15 ± 3.34 (0.597†) | 16.45 ± 6.84 (0.344†) | 0.071* |
Post-op 3 months | 14.75 ± 3.32 (0.687†) | 15.59 ± 7.75 (0.592†) | 0.054* |
Mean changes of IOP | |||
Post-op 1 month | 1.02 ± 1.75 | 0.98 ± 5.14 | |
Post-op 2 months | 1.06 ± 1.85 | 2.01 ± 5.54 | |
Post-op 3 months | 1.43 ± 1.96 | 4.55 ± 8.27 |