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Updated: Aug 25, 2026

Quail Chorioallantoic Membrane - A Tool for Photodynamic Diagnosis and Therapy
Published on: April 28, 2022
Photodynamic therapy-treated choroidal neovascular membrane secondary to toxoplasmic retinochoroiditis
Leonardo Bruno Oliveira1, Pedro Augusto Reis
1HOBC-Hospital de Olhos Brasil Central, Rua Tapuirama 281 ap. 704, 38400-436 Uberlândia, MG, Brazil. leonardobruno@hotmail.com
Purpose:
To report the result of photodynamic therapy with Visudyne (PDT) on a child with choroidal neovascular membrane (CNV) secondary to toxoplasmic retinochoroiditis.
Methods:
An 11-year-old child with a unilateral lowering of visual acuity secondary to an extrafoveal choroidal neovascular membrane was submitted to PDT.
Results:
One week after PDT, the patient's vision had improved from 10/160 to 20/70, with marked improvement in the angiographic findings. The CNV evolved with decreasing of leakage until 45 days after operation, when it regressed to a chorioretinal scar formation, with final vision of 20/25.
Conclusion:
PDT promoted an early recovery of visual acuity in an eye with choroidal neovascularization secondary to toxoplasmic retinochoroiditis.
