9.6  Optical Coherence Tomography – Anterior Segment

By appropriately focussing the OCT light on the anterior segment, rather than the retina, high-resolution non-invasive tomograms can be obtained of the cornea, iris, lens, and irido-corneal angle. Precise measurements of these structures can be made which augment clinical examination. These scans are becoming progressively more important in the management of corneal conditions and glaucoma. Candidates would be expected to know when to request anterior segment OCT imaging and how it can be used to assist with patient management.


Figure 9.6.1 Capsular Bag Distension Syndrome

Figure 9.6.1
Capsular Bag Distension Syndrome

A vast amount of reflective material is demonstrated between the intraocular lens implant and the posterior capsule.

Figure 9.6.2 IOL Opacification

Figure 9.6.2
IOL Opacification

A normal intraocular lens is perfectly clear and demonstrates no reflective surfaces within it, hence appears totally black internally. This lens has a subtle increase in internal reflectivity from opacification.

Figure 9.6.3 Iris Arterio-Venous Malformation

Figure 9.6.3
Iris Arterio-Venous Malformation


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