Effectiveness of intravitreal ranibizumab in exudative age-related macular degeneration (AMD): comparison between typical neovascular AMD and polypoidal choroidal vasculopathy over a 1 year follow-up.

Abstract

BACKGROUND:

The effects of intravitreal ranibizumab (IVR) against exudative age-related macular degeneration (AMD) may be different associated with the lesion phenotype. This study was conducted to compare the outcomes of IVR between two different phenotypes of exudative AMD: typical neovascular AMD (tAMD) and polypoidal choroidal vasculopathy (PCV).

METHODS:

This is a retrospective cohort study of 54 eyes from 54 subfoveal exudative AMD patients (tAMD 24, PCV 30 eyes). Three consecutive IVR treatments (0.5 mg) were performed every month, followed by re-injections as needed. Change in the best-corrected visual acuity (BCVA) and central retinal thickness (CRT) were then compared between the tAMD and PCV groups over 12 months of follow-up.

RESULTS:

The mean BCVA was significantly improved (-0.11 logMAR units) at month 3 after the initial IVR (p <0 .001, Wilcoxon signed-rank test), and was sustained up to 12 months in all AMD patients (p =0.02). In the subgroup analysis, the tAMD group showed a significant improvement in their mean BCVA (-0.06, -0.17, -0.15 and -0.16 logMAR units at 1, 3, 6 and 12 months, respectively), but there was only a slight but non-significant improvement in the PCV group. The improvement in the BCVA was significantly greater in the tAMD group than in the PCV group (p = 0.043, repeated measures ANOVA) over 12 months. Both phenotypes showed significant improvements in the CRT during 12 months after the initial IVR.

CONCLUSIONS:

IVR is an effective therapy for tAMD and PCV in the BCVA improvement in Japanese patients over 12 months of follow-up. The phenotype of tAMD showed a significantly better outcome with IVR than PCV in terms of BCVA improvement.

• Authors: Wataru Matsumiya, Shigeru Honda, Sentaro Kusuhara, Yasutomo Tsukahara, Akira Negi
• Journal: BMC ophthalmology (BMC Ophthalmol) Vol. 13 Pg. 10 (Apr 04 2013) ISSN: 1471-2415 [Electronic] England
• PMID: 23557322 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Angiogenesis Inhibitors
• Antibodies, Monoclonal, Humanized
• Ranibizumab

Topics

• Aged
• Angiogenesis Inhibitors (administration & dosage)
• Antibodies, Monoclonal, Humanized (administration & dosage)
• Choroid Diseases (drug therapy, pathology, physiopathology)
• Female
• Follow-Up Studies
• Humans
• Intravitreal Injections
• Logistic Models
• Macular Degeneration (drug therapy, pathology, physiopathology)
• Male
• Middle Aged
• Polyps (drug therapy)
• Ranibizumab
• Retrospective Studies
• Visual Acuity