Journal List > J Korean Ophthalmol Soc > v.57(3) > 1010531

Kim, Kim, Han, Park, and Chung: Comparison of Bevacizumab and Combined Low-dose Bevacizumab and Triamcinolone in Central Retinal Vein Occlusion

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.

References

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Table 1.
Patient demographics and baseline characteristics
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

Values are presented as mean ± SD unless otherwise indicated.

IVB = intravitreal bevacizumab injection; IVTA = intravitreal triamcinolen injection.

* Independent t-test;

Fisher's exact test.

Table 2.
Visual acuity, CMT, and IOP results in patients with CRVO
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*

Values are presented as mean ± SD unless otherwise indicated.

CMT = central macular thickness; IOP = intraocular pressure; CRVO = central retinal vein occlusion; FU = follow up; BCVA = best corrected visual acuity; IVB = intravitreal bevacizumab injection; IVTA = intravitreal triamcinolen injection.

* Independent t-test;

p-value compared with baseline, paired t-test.

Table 3.
Comparison of visual acuity between IVB and IVB + IVTA Groups
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*

Values are presented as mean ± SD unless otherwise indicated.

IVB = intravitreal bevacizumab injection; IVTA = intravitreal triamcinolen injection; BCVA = best corrected visual acuity; Post-op = postoperative.

* Independent t-test;

p-value compared with baseline, paired t-test.

Table 4.
Comparison of CMT between IVB and IVB + IVTA Groups
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*

Values are presented as mean ± SD unless otherwise indicated.

CMT = central macular thickness; IVB = intravitreal bevacizumab injection; IVTA = intravitreal triamcinolen injection; Post-op = postoperative.

* Independent t-test;

p-value compared with baseline, paired t-test.

Table 5.
Comparison of IOP between IVB and IVB + IVTA Groups
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

Values are presented as mean ± SD unless otherwise indicated.

IOP = intraocular pressure; IVB = intravitreal bevacizumab injection; IVTA = intravitreal triamcinolen injection; Post-op = postoperative.

* Independent t-test;

p-value compared with baseline, paired t-test.

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