Abstract
Purpose
To investigate factors contributing to the visual prognosis of choroidal neovascularization (CNV) secondary to angioid streaks (AS) in a long-term follow-up (> 5 years) study.
Methods
Twenty-one patients (32 eyes) affected by CNV secondary to AS were enrolled retrospectively and divided into three groups according to the period of CNV recurrence from the final treatment: group A, no recurrence for more than 12 months; group B, no recurrence for 6–12 months; and group C, no recurrence for < 6 months or ongoing. According to the above classification, we assessed best-corrected visual acuity (BCVA), peau d’orange area, the number of photodynamic treatments and/or intravitreal antiangiogenic drug injections, central choroidal thickness (CCT) and central retinal thickness (CRT) using optical coherence tomography, and enlargement of retinal pigment epithelium (RPE) atrophy.
Results
The median follow-up time was 91 months. The median logarithm of the minimum angle of resolution BCVA significantly deteriorated from 0 at baseline to 1 at final follow-up (p < 0.05). Especially, final BCVA in group A showed worst visual outcome despite lowest number of treatments. Peau d’orange areas at baseline were found in 32 eyes (100%). There were no significant differences between initial CRT and final CRT. Median CCT was significantly reduced from 188 μm at baseline to 96 μm at final follow-up (p < 0.05). The median number of treatments was 3.5. Enlargement of RPE atrophy at baseline was found in 31 eyes (96.8%).
Conclusions
Despite the regression of CNV secondary to AS following treatment, the visual prognosis was poor due to the presence of peau d’orange areas, choroidal thinning, and increased RPE atrophy.
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Abbreviations
- CNV:
-
choroidal neovascularization
- AS:
-
angioid streaks
- BCVA:
-
best-corrected visual acuity
- CCT:
-
central choroidal thickness
- CRT:
-
central retinal thickness
- RPE:
-
retinal pigment epithelium
- TTT:
-
transpupillary thermotherapy
- PDT:
-
photodynamic therapy
- VEGF:
-
vascular endothelial growth factor
- AMD:
-
age-related macular disease
- CFP:
-
color fundus photography
- FA:
-
fluorescein angiography
- IA:
-
indocyanine green angiography
- FAF:
-
fundus auto-fluorescence
- SD-OCT:
-
spectral-domain optical coherence tomography
- NIR:
-
near infrared reflectance
- logMAR:
-
logarithm of the minimum angle of resolution
- EDI:
-
enhanced depth imaging
- PRN:
-
pro re nata
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Research design was performed by Hidetsugu Mori and Kanji Takahashi.
Data analysis was performed by Hidetsugu Mori.
Hidetsugu Mori wrote the paper with support of Haruhiko Yamada and Kanji Takahashi.
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The research was conducted in accordance with the guiding principles of the Declaration of Helsinki and approved by the institutional review board of Kansai Medical University.
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Mori, H., Yamada, H. & Takahashi, K. Long-term results of choroidal neovascularization secondary to angioid streaks. Graefes Arch Clin Exp Ophthalmol 258, 1863–1869 (2020). https://doi.org/10.1007/s00417-020-04760-2
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DOI: https://doi.org/10.1007/s00417-020-04760-2