<unk>  is the use of optical coherence tomography <unk>  in place of slit lamp biomicroscopy to examine the transparent axial tissues of the eye. Traditionally, ophthalmic biomicroscopy has been completed with a slit lamp biomicroscope that uses slit beam illumination and an optical microscope to enable stereoscopic, magnified, cross-sectional views of transparent tissues in the eye, with or without the aid of an additional lens. Like slit lamp biomicroscopy,<unk>  does not penetrate opaque tissues well but enables detailed, cross-sectional views of transparent tissues, often with greater detail than is possible with a slit lamp. Ultrasound biomicroscopy (UBM) is much better at imaging through opaque tissues since it uses high energy sound waves. Because of its limited depth of penetration, UBM's main use within ophthalmology has been to visualize anterior structures such as the angle and ciliary body. Both ultrasound and<unk>  produce an objective image of ocular tissues from which measurements can be made. Unlike UBM,<unk>  can image tissues with high axial resolution as far posteriorly as the choroid (Figure 1).
OCT Biomicroscopy
Optical coherence tomography angiography
Doppler optical coherence tomography
Ultrasound biomicroscopy
Speckle variance optical coherence tomography
Optical coherence tomography
Corneal topography
Retinal vessel analysis