- In normal eyes, these vessels are not usually visible
by gonioscopic examination.
- However, occasionally wandering portion or loops of the vessels
may protrude from the surface of the angle and be situated far in
front of the scleral spur and trabecular meshwork.
- The prominent vessels may also be seen anterior to the root of the
iris.
- Only short segments of the undulating loops usually come into gonioscopic
view. The vessels typically take a circumferential route without compromising
aqueous outflow.
- In addition to these vessels, normal radial vessels may also be
seen in the peripheral iris of lightly colored eyes and should be
distinguished from abnormal neovascularization of the iris or abnormally
dilated vessels associated with inflammation.
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