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ORIGINAL ARTICLE
Year : 2019  |  Volume : 67  |  Issue : 12  |  Page : 2023-2028

Understanding the structural changes following photodynamic and transpupillary thermotherapy for choroidal hemangioma using optical coherence tomography and optical coherence tomography angiography


1 L V Prasad Eye Institute, Vijayawada, Andhra Pradesh, India
2 L V Prasad Eye Institute, Hyderabad, Telangana, India

Correspondence Address:
Dr. Vishal Raval
L V Prasad Eye Institute, KVC Campus, Tadigadapa, Vijayawada, Andhra Pradesh - 521 137
India
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ijo.IJO_962_19

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Purpose: To study optical coherence tomography (OCT) and optical coherence tomography angiography (OCT-A) features of circumscribed choroidal hemangioma (CCH) following treatment with photodynamic therapy (PDT) and transpupillary thermotherapy (TTT). Methods: A retrospective chart review of consecutive patients treated for CCH over 2 years (May 2016–April 2018). The investigations, in addition to comprehensive eye examination, included color fundus photography, B-scan ultrasonography, OCT, and OCT-A. Results: The study included 16 eyes of 16 patients (9 males and 7 females). The mean age at presentation was 43.5 ± 9 years (range 33–62 years). Macula (n = 6) and superior arcade (n = 5) were the common tumor locations. Twelve eyes received multiple treatment sessions: TTT (seven eyes; mean 2.4 sessions) and PDT (five eyes; mean 2 sessions). Four eyes were observed because vision was not threatened. Pretreatment OCT features were Bruch's membrane atrophy (15 eyes), retinal pigment epithelial atrophy (13 eyes), outer retinal abnormalities (12 eyes), and macular subretinal fluid (12 eyes). Pretreatment OCT-A features were complete loss of choriocapillaris (16 eyes), irregularly arranged fine arborizing vessels (11 eyes), and more than 50% signal void hyporeflective areas (12 eyes). Posttreatment OCT-A showed persistence of choriocapillaris loss, flat scar with fibrosis and thinning of choroid in all eyes treated with TTT, and persistence of deeper choroidal vessels and no loss of choriocapillaris in eyes treated with PDT. Conclusion: OCT and OCT-A help understand the structural outcome following PDT and TTT in circumscribed choroidal hemangioma.


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