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Ophthalmic Surg Lasers Imaging Retina. 2019 May 1;50(5):e133-e139. doi: 10.3928/23258160-20190503-13.

Choriocapillary Blood Flow in Myopic Subjects Measured With OCT Angiography.

Abstract

BACKGROUND AND OBJECTIVE:

To investigate choriocapillary blood flow in myopic eyes using optical coherence tomography angiography.

PATIENTS AND METHODS:

Seventy-eight myopic and 79 age-matched healthy eyes were included in this study, with myopia defined as a spherical equivalent refraction (SER) between -1 diopters (D) and -6 D. Quantitative measurements of the choriocapillaris were obtained using the Avanti RTVue XR with AngioVue. Choroidal thickness (CT) was assessed using the single-line enhanced high-definition scan of the same device.

RESULTS:

CT correlated positively with SER (P = .017) and negatively with bulbus axial length (AL) (P = .180). Subfoveal choriocapillary blood flow did not show any significant correlation with any of the parameters SER, AL, or CT (P = .798, P = .269, and P = .820, respectively). The mean flow signal of the myopic group did not differ significantly from the mean flow signal of the emmetropic control group (P = .266).

CONCLUSION:

Choriocapillary blood flow seems to retain a constant level with increasing physiological myopia. [Ophthalmic Surg Lasers Imaging Retina. 2019;50:e133-e139.].

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