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Updated: Mar 8, 2026

An Ex Vivo Tissue Culture Model for Fibrovascular Complications in Proliferative Diabetic Retinopathy
Published on: January 25, 2019
Reduced-fluence photodynamic therapy and anti-vascular endothelial growth factor for polypoidal choroidal
Parveen Sen1, Muna Bhende1, Ramya Sachidanandam2
1Department of Vitreoretinal Services, Shri Bhagwan Mahavir Vitreoretinal Services, Medical Research Foundation, Sankara Nethralaya, Chennai, Tamil Nadu, India.
Aims:
The aim was to study the efficacy of combined therapy with reduced-fluence photodynamic therapy (RFPDT) and intravitreal bevacizumab/ranibizumab from the Indian subcontinent.
Settings And Design:
This was a single-center, retrospective interventional study.
Methods:
Thirty-five eyes of 34 patients diagnosed with polypoidal choroidal vasculopathy were included. All the patients underwent RFPDT, followed by intravitreal bevacizumab/ranibizumab.
Statistical Analysis Used:
SPSS software, version 17.0 (SPSS Inc., Chicago, IL, USA) was used to compare the logarithm of the minimal angle of resolution visual acuity at presentation and final follow-up. P< 0.05 was considered statistically significant.
Results:
Regression of polyps after a single session of RFPDT was seen in five eyes; multiple sessions of treatment were required in thirty eyes. An average number of intravitreal anti-vascular endothelial growth factor (anti-VEGF) injections given were 4 ± 1.9 and average number of PDT sessions were 1.2 ± 0.5. Visual acuity improvement was seen in 21 (60%) eyes (P < 0.001), decrease in visual acuity was seen in 7 (20%) eyes (P = 0.016), and in 7 eyes (20%), vision remained stable. Regression of polypoidal lesions was seen in 80% of cases. No complications of massive subretinal hemorrhage or breakthrough vitreous hemorrhage were noted in our patients. The mean follow-up period was 18 months (range, 12-24 months).
Conclusions:
RFPDT with anti-VEGF is safe and effective treatment with polyp regression and vision improvement in 80% of cases, without any complication of subretinal hemorrhage/vitreous hemorrhage.
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