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Information Journal Paper

Title

OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN RETINAL DISEASES (REVIEW ARTICLE)

Pages

  84-92

Keywords

OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY (OCTA) 
SPLIT-SPECTRUM AMPLITUDE DECORRELATION ANGIOGRAPHY (SSADA) 

Abstract

 Optical coherence tomography angiography (OCTA) is a new, non‑invasive imaging system that generates volumetric data of retinal and choroidal layers. It has the ability to show both structural and blood flow information. Split‑spectrum amplitude‑decorrelation angiography (SSADA) algorithm (a vital component of OCTA software) helps to decrease the signal to noise ratio of flow detection thus enhancing visualization of retinal vasculature using motion contrast. Published studies describe potential efficacy for OCTA in the evaluation of common ophthalmologic diseases such as DIABETIC RETINOPATHY, AGE RELATED MACULAR DEGENERATION (AMD), retinal vascular occlusions and sickle cell disease. OCTA provides a detailed view of the retinal vasculature, which allows accurate delineation of microvascular abnormalities in diabetic eyes and vascular occlusions. It helps quantify vascular compromise depending upon the severity of DIABETIC RETINOPATHY. OCTA can also elucidate the presence of CHOROIDAL NEOVASCULARIZATION (CNV) in wet AMD.In this paper, we review the knowledge, available in English language publications regarding OCTA, and compare it with the conventional angiographic standard, fluorescein angiography (FA). Finally, we summarize its potential applications to retinal vascular diseases. Its current limitations include a relatively small field of view, inability to show leakage, and tendency for image artifacts. Further larger studies will define OCTA’s utility in clinical settings and establish if the technology may offer a non‑nvasive option of visualizing the retinal vasculature, enabling us to decrease morbidity through early detection and intervention in retinal diseases.

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    Cite

    APA: Copy

    CHALAM, K.V., & SAMBHAV, KUMAR. (2016). OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN RETINAL DISEASES (REVIEW ARTICLE). JOURNAL OF OPHTHALMIC AND VISION RESEARCH, 11(1), 84-92. SID. https://sid.ir/paper/311620/en

    Vancouver: Copy

    CHALAM K.V., SAMBHAV KUMAR. OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN RETINAL DISEASES (REVIEW ARTICLE). JOURNAL OF OPHTHALMIC AND VISION RESEARCH[Internet]. 2016;11(1):84-92. Available from: https://sid.ir/paper/311620/en

    IEEE: Copy

    K.V. CHALAM, and KUMAR SAMBHAV, “OPTICAL COHERENCE TOMOGRAPHY ANGIOGRAPHY IN RETINAL DISEASES (REVIEW ARTICLE),” JOURNAL OF OPHTHALMIC AND VISION RESEARCH, vol. 11, no. 1, pp. 84–92, 2016, [Online]. Available: https://sid.ir/paper/311620/en

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