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Proceedings Paper

Angular distribution of Pigment epithelium central limit-Inner limit of the retina Minimal Distance (PIMD), in the young not pathological optic nerve head imaged by OCT
Author(s): Per G. Söderberg; Camilla Sandberg-Melin
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Paper Abstract

The present study aimed to elucidate the angular distribution of the Pigment epithelium central limit-Inner limit of the retina Minimal Distance measured over 2π radians in the frontal plane (PIMD-2π) in young healthy eyes. Both healthy eyes of 16 subjects aged [20;30[ years were included. In each eye, a volume of the optical nerve head (ONH) was captured three times with a TOPCON DRI OCT Triton (Japan). Each volume renders a representation of the ONH 2.8 mm along the sagittal axis resolved in 993 steps, 6 mm long the frontal axis resolved in 512 steps and 6 x mm along the longitudinal axis resolved in 256 steps. The captured volumes were transferred to a custom made software for semiautomatic segmentation of PIMD around the circumference of the ONH. The phases of iterated volumes were calibrated with cross correlation. It was found that PIMD-2π expresses a double hump with a small maximum superiorly, a larger maximum inferiorly, and minima in between. The measurements indicated that there is no difference of PIMD-2π between genders nor between dominant and not dominant eye within subject. The variation between eyes within subject is of the same order as the variation among subjects. The variation among volumes within eye is substantially lower.

Paper Details

Date Published: 8 March 2018
PDF: 7 pages
Proc. SPIE 10474, Ophthalmic Technologies XXVIII, 1047413 (8 March 2018); doi: 10.1117/12.2299723
Show Author Affiliations
Per G. Söderberg, Uppsala Univ. (Sweden)
Camilla Sandberg-Melin, Uppsala Univ. (Sweden)
Gävle Regional Hospital (Sweden)


Published in SPIE Proceedings Vol. 10474:
Ophthalmic Technologies XXVIII
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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