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Widefield OCT imaging enhances diagnostic decision-making in retinal disease

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Judy E. Kim

WAILEA, Hawaii — Widefield OCT gives wider, deeper field of view with one scan without the need for serial montage imaging or concern for small pupil size.

Posterior vitreous interface and choroidal lesions can be studied with simultaneous tomographic and topographic imaging giving point-to-point registration, such that lesions may be followed visit-to-visit with one scan, according to Judy E. Kim, MD.

“In some cases, I’ve also used it when patients are complaining about floaters ... and you do these OCTs, and you can find if there is actual posterior vitreous detachment,” Kim said at Retina 2018. “By seeing more, we might be able to diagnose disease better and also decide whether cases should be managed medically or surgically.”

Kim and colleagues looked at use of widefield OCT to measure choroidal thickness in the periphery in patients with central serous choroidopathy (CSC) vs. patients with AMD. In patients with CSC, the researchers found that the choroid was diffusely thickened throughout the fovea, at 3,500 µm and at the periphery compared with control.

In patients with AMD, however, there were variations in thickness depending on whether the patient had dry AMD, typical wet AMD or polypoidal choroidal vasculopathy. Kim suggested that variations in choroid measurements could be due to the dynamic nature of choroidal thickness.

“It varies from morning, mid-afternoon to night, depending on when you measure the choroid thickness, and it can be affected by axial length, age and so forth,” she said. “Some feel that choroid thinning may be the reason why some patients worsen in their disease in terms of dry AMD or even ischemia causing wet AMD development.” – by Patricia Nale, ELS

Reference:

Kim JE. Lessons from widefield OCT. Presented at: Retina 2018; Jan. 14-19, 2018; Wailea, Hawaii.

Disclosure: Kim reports she receives research support from Optos.