Evidence map›Paper›PMID 41926912›Full record

ArticleOptometry and vision science : official publication of the American Academy of Optometry2026

Nonaxonal content of the circumpapillary retinal nerve fiber layer in experimental glaucoma.

Anish Kharal, Pratik Chettry, Nao Omi, Nimesh Bhikhu Patel

Abstract read
In one paragraph

Article in Optometry and vision science : official publication of the American Academy of Optometry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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0citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

0 citing papers in PubMed.

No citing paper in PubMed yet.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Anish KharalUniversity of Houston, College of Optometry, Houston, Texas, USA.ORCID 0000-0002-1846-2196
Pratik ChettryUniversity of Houston, College of Optometry, Houston, Texas, USA.
Nao OmiUniversity of Houston, College of Optometry, Houston, Texas, USA.
Nimesh Bhikhu PatelUniversity of Houston, College of Optometry, Houston, Texas, USA.ORCID 0000-0002-1772-2611

Funding

Research Programming ModuleP30EY007551 · NEI · UNIVERSITY OF HOUSTON · PI VALLABH E DAS · 1988 to 2026
$16.4M
OCTA and Glaucoma Progression in the Non-Human PrimateR01EY033743 · NEI · UNIVERSITY OF HOUSTON · PI PATEL, NIMESH BHIKHU · 2022 to 2025
$2.1M
NEI NIH HHS P30 EY007551NEI NIH HHS R01 EY033743NEI NIH HHS R01EY033743
6 · The paper itself

Abstract

purposeThis study aimed to determine the region-specific distribution of nonaxonal cells and capillaries within the circumpapillary retinal nerve fiber layer (RNFL) in a nonhuman primate experimental glaucoma model.

methodsFive rhesus macaques (age range: 4.5-9.0 years) with varying degrees of unilateral laser-induced experimental glaucoma were imaged with optical coherence tomography (OCT), euthanized and perfusion fixed for histological analysis. Eyes were enucleated, and six circumpapillary regions (60° apart), approximately 300-1000 µm from the optic disc margin, were dissected and prepared for serial block face scanning electron microscopy. A series of 400 images (0.098 µm/pixel) were obtained at 500 nm intervals to construct a volume of 200 × 200 × 200 µm. Inside the nerve fiber layer, nonaxonal nuclei and capillary lumen were manually outlined. The nearest vessel distance for each nonaxonal cell was determined as the Euclidean distance in 3-dimensional space from each nucleus center to the nearest capillary.

resultsAt endpoint, OCT circumpapillary RNFL thickness in the experimental eyes ranged between 49 and 99 µm (control: 103-111 µm). In control eyes, the distribution of nonaxonal cells at the six circumpapillary regions was nonuniform (F

conclusionsThe number of nonaxonal cells and capillary volume density in the circumpapillary RNFL are similar for stable glaucomatous eyes compared to the healthy eyes. Regional differences and changes in nonaxonal contribution to the nerve fiber layer thickness should be considered when assessing clinical RNFL thickness measures.

Indexed as

GlaucomaNerve FibersOptic DiskRetinal Ganglion CellsAnimalsCapillariesDisease Models, AnimalIntraocular PressureMacaca mulattaMicroscopy, Electron, ScanningTomography, Optical Coherence

Identifiers

PMID41926912
PMCPMC13156695

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.