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Cross-sectionalAmerican journal of ophthalmology · 2026

Greater exposed neural canal elongation of the myopic optic nerve head is associated with papillomacular bundle defects in glaucoma.

Eun Jung Lee, Jong Chul Han, Do Young Park

OphthalmologyCross-sectional

Longer optic nerve canal elongation is linked to papillomacular bundle defects in myopic glaucoma

Greater exposed neural canal elongation of the myopic optic nerve head is associated with papillomacular bundle defects in glaucoma.

Eun Jung Lee … Do Young Park

American journal of ophthalmology · 2026

Purpose

To investigate the association between optical coherence tomography (optical coherence tomography) parameters of optic nerve head (optic nerve head) neural canal configuration and papillomacular bundle (papillomacular bundle) defects in myopic eyes with glaucoma.

Methods

Retrospective cross-sectional study.

n = 101 eyes

Results

3 in 4 eyes with more nerve canal stretching had these vision-nerve-fiber defects

EOBT ratio ≥ 0.5

75%

BMO-SFO ratio < 0.5

66.7%

More results

In this cohort, the mean axial length was 26.52 ± 1.10 mm (range, 24.30 to 29.25 mm), and papillomacular bundle defects were observed in 37 of 101 eyes (36.6%).

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Conclusion

Greater exposed neural canal elongation in the myopic optic nerve head, most pronounced in the temporal and inferotemporal regions corresponding to the papillomacular bundle trajectory, was associated with papillomacular bundle defects in glaucoma.

Post

Greater exposed neural canal elongation of the myopic optic nerve head is associated with papillomacular bundle defects in glaucoma.

Longer optic nerve canal elongation is linked to papillomacular bundle defects in myopic glaucoma

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