ArticleInvestigative ophthalmology & visual science2025
In Vivo Quantification of Anterior and Posterior Chamber Volumes in Mice: Implications for Aqueous Humor Dynamics.
Article in Investigative ophthalmology & visual science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed.
- Toward autonomous robotic-assisted and microrobotic surgery.Science advances · 2026Review
- Machine-Learning-Based Automated Schlemm's Canal Volumetric Segmentation for Optical Coherence Tomography.Chemical & biomedical imaging · 2026Article
- Microtubule stability modulates Schlemm's canal cell mechanobiology and outflow facility in glaucoma.bioRxiv : the preprint server for biology · 2026Article
- Volumetric montaging of optical coherence tomography in human retinas.bioRxiv : the preprint server for biology · 2026Article
- Intracameral Puncture Lowers Intraocular Pressure and Triggers an Immune Response in the Conventional Outflow Tract.Investigative ophthalmology & visual science · 2025Article
- Production and Use of Customizable Agarose Molds for Scaffold-Free Mouse Ovarian Follicle Culture.Journal of visualized experiments : JoVE · 2025Article
- Molecular and Histological Characterization of a Novel Hydrogel-Based Strategy for Inducing Experimental Glaucoma in Mice.International journal of molecular sciences · 2025Article
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Abstract
Purpose: Aqueous humor inflow rate, a key parameter influencing aqueous humor dynamics, is typically measured by fluorophotometry. Analyzing fluorophotometric data depends, inter alia, on the volume of aqueous humor in the anterior chamber but not the posterior chamber. Previous fluorophotometric studies of the aqueous inflow rate in mice have assumed the ratio of anterior:posterior volumes in mice to be similar to those in humans. Our goal was to measure anterior and posterior chamber volumes in mice to facilitate better estimates of aqueous inflow rates. Methods: We used standard near-infrared (NIR) optical coherence tomography (OCT) and robotic visible-light OCT (vis-OCT) to visualize, reconstruct, and quantify the volumes of the anterior and posterior chambers of the mouse eye in vivo. We used histology and micro-computed tomography (CT) scans to validate relevant landmarks from ex vivo tissues and facilitate in vivo measurement. Results: Posterior chamber volume is 1.1 times the anterior chamber volume in BALB/cAnNCrl mice, that is, the anterior chamber constitutes about 47% of the total aqueous humor volume, which is very dissimilar to the situation in humans. Anterior chamber volumes in 2-month-old BALB/cAnNCrl and C57BL6/J mice were 1.55 ± 0.36 µL (n = 10) and 2.05 ± 0.25 µL (n = 10), respectively. This implies that previous studies likely overestimated the aqueous inflow rate by approximately twofold. Conclusions: It is necessary to reassess previously reported estimates of aqueous inflow rates and, thus, aqueous humor dynamics in the mouse. For example, we now estimate that only 0% to 15% of aqueous humor drains via the pressure-independent (unconventional) route, similar to that seen in humans and monkeys.
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