Current research status of optical coherence tomography angiography in anterior segment diseases
Optical coherence tomography angiography(OCTA)is a new non-invasive and rapid imaging technique.Compared with current anterior segment imaging techniques,OCTA has advantages such as rapidity,non-invasive,and dye-free.In addition,compared to spectral domain OCTA,the latest swept-source OCTA has a stronger signal-to-noise ratio,higher penetration,and longer wavelength,and can detect deeper vascular structures,achieving higher resolution and accurate blood flow imaging.OCTA is mainly used for retinal vascular imaging,and anterior segment imaging requires the installation of anterior segment adapter lenses.In recent years,research on the application of OCTA in anterior segment diseases has been increasing.This article will review the application of OCTA in anterior segment diseases such as conjunctiva,sclera,cornea,and iris.The application of spectral domain OCTA and swept-source OCTA in anterior segment diseases are also compared and their limitations are discussed..
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