Ultrawide field, distortion-corrected ocular shape estimation with MHz optical coherence tomography (OCT)

Ultrawide field, distortion-corrected ocular shape estimation with MHz optical coherence tomography (OCT)

Ocular deformation may be associated with biomechanical alterations in the structures of the eye, especially the cornea and sclera in conditions such as keratoconus, congenital glaucoma, and pathological myopia. Here, we propose a method to estimate ocular shape using an ultra-wide field MHz swept-s...

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Veröffentlicht in:Biomedical optics express 2021-09, Vol.12 (9), p.5770-5781
Hauptverfasser: Tan, Bingyao, McNabb, Ryan P, Zheng, Feihui, Sim, Yin Ci, Yao, Xinwen, Chua, Jacqueline, Ang, Marcus, Hoang, Quan V, Kuo, Anthony N, Schmetterer, Leopold
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container_end_page 5781
container_issue 9
container_start_page 5770
container_title Biomedical optics express
container_volume 12
creator Tan, Bingyao
McNabb, Ryan P
Zheng, Feihui
Sim, Yin Ci
Yao, Xinwen
Chua, Jacqueline
Ang, Marcus
Hoang, Quan V
Kuo, Anthony N
Schmetterer, Leopold
description Ocular deformation may be associated with biomechanical alterations in the structures of the eye, especially the cornea and sclera in conditions such as keratoconus, congenital glaucoma, and pathological myopia. Here, we propose a method to estimate ocular shape using an ultra-wide field MHz swept-source optical coherence tomography (SS-OCT) with a Fourier Domain Mode-Locked (FDML) laser and distortion correction of the images. The ocular biometrics for distortion correction was collected by an IOLMaster 700, and localized Gaussian curvature was proposed to quantify the ocular curvature covering a field-of-view up to 65°×62°. We achieved repeatable curvature shape measurements (intraclass coefficient = 0.88 ± 0.06) and demonstrated its applicability in a pilot study with individuals (N = 11) with various degrees of myopia.
doi_str_mv 10.1364/BOE.428430
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title Ultrawide field, distortion-corrected ocular shape estimation with MHz optical coherence tomography (OCT)
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