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J Vis Exp ; (161)2020 07 24.
Article in English | MEDLINE | ID: mdl-32773758

ABSTRACT

Spectral-domain optical coherence tomography (SD-OCT) is useful for visualizing retinal and ocular structures in vivo. In research, SD-OCT is a valuable tool to evaluate and characterize changes in a variety of retinal and ocular disease and injury models. In light induced retinal degeneration models, SD-OCT can be used to track thinning of the photoreceptor layer over time. In glaucoma models, SD-OCT can be used to monitor decreased retinal nerve fiber layer and total retinal thickness and to observe optic nerve cupping after inducing ocular hypertension. In diabetic rodents, SD-OCT has helped researchers observe decreased total retinal thickness as well as decreased thickness of specific retinal layers, particularly the retinal nerve fiber layer with disease progression. In mouse models of myopia, SD-OCT can be used to evaluate axial parameters, such as axial length changes. Advantages of SD-OCT include in vivo imaging of ocular structures, the ability to quantitatively track changes in ocular dimensions over time, and its rapid scanning speed and high resolution. Here, we detail the methods of SD-OCT and show examples of its use in our laboratory in models of retinal degeneration, glaucoma, diabetic retinopathy, and myopia. Methods include anesthesia, SD-OCT imaging, and processing of the images for thickness measurements.


Subject(s)
Eye Diseases/diagnostic imaging , Eye/diagnostic imaging , Eye/pathology , Tomography, Optical Coherence , Animals , Axial Length, Eye , Disease Models, Animal , Female , Image Processing, Computer-Assisted , Male , Mice, Inbred BALB C , Myopia/diagnostic imaging , Myopia/pathology , Photoreceptor Cells, Vertebrate/pathology , Rats , Retina/diagnostic imaging , Retina/pathology
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