Precise retinal shape measurement by alignment error and eye model calibration

Palchunova, Kseniya; Mino, Toshihiro; Mihashi, Toshifumi; Liu, Jonathan; Tasaki, Kuniharu; Hasegawa, Yumi; Hiraoka, Takahiro; Oshika, Tetsuro

doi:10.1007/s10043-022-00733-4

Cited by 2 publications

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wide eld OCT not only allows for local ocular shape assessment, as demonstrated in this study, but also offers simultaneous evaluation of global ocular shape and size parameters. This broader scope opens avenues for assessing peripheral refraction [29] and investigating the relationship between global ocular shape and myopia treatment modalities such as outdoor activities, atropine eye drops, orthokeratology, and multifocal intraocular lenses [30].…”

Section: Discussionmentioning

confidence: 99%

New findings on the unique curvature region in the posterior eye using widefield OCT

Hiraoka,

Tamura,

Moriguchi

et al. 2024

Preprint

View full text Add to dashboard Cite

This study aimed to explore the curvature distribution in the posterior eye among school-aged children using distortion-corrected optical coherence tomography (OCT) images and its relationship with biometric variables and choroidal vascular parameters. We conducted a prospective, observational, cross-sectional study involving 88 children aged 6 to 15 years. After comprehensive ocular examinations, widefield OCT volumes with a 68×68 degrees were captured utilizing a high-speed, wide-field SS-OCT prototype system. The distortion of the captured OCT volume was geometricallycorrected, and Gaussian curvature maps were derived from Bruch’s membrane segmentation lines. The mean curvature was assessed across four square regions of 19×19 degrees each, where axial length (AL), refractive error, age, and choroidal thickness (ChT) were statistically analyzed. Additionally, the entry site of the long posterior ciliary artery (LPCA) into the choroid were assessed from the same OCT volume. Analysis of 169 OCT images demonstrated bilateral symmetry in choroidal vascular patterns and posterior eye curvature. Mean curvature exhibited asignificant correlation with AL, refractive error, and ChT in the superior, macular, and inferior regions. Conversely, the temporal region showed a weak negative correlation. Notably, a local maximum curvature point was commonly observed in the temporal region for the first time in this study, suggesting a potential reversal of correlation in this area. The rationale for this observation remains unclear; however, the proximity of the local maximum curvature point to the long posterior ciliary artery (LPCA) entry site may suggest a link. Further investigation is necessary to elucidate the origins and implications of these findingsfor ocular development.

show abstract

Section: Discussionmentioning

confidence: 99%