Corneal Tunnel
Corneal Tunnel - Related Videos
09:23
Turbulence Sphere Method: Evaluating Wind Tunnel Flow Quality
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2023
Source: Jose Roberto Moreto and Xiaofeng Liu, Department of Aerospace Engineering, San Diego State University, San Diego, CA Wind tunnel tests are useful in the design of vehicles and structures that are subjected to airflow during their use. Wind tunnel data are generated by applying a controlled air flow to a model of the object being studied. The test model usually has a similar geometry but is a smaller scale compared to the full-sized object. To ensure accurate and useful data is collected...
08:37
Corneal Donor Tissue Preparation for Endothelial Keratoplasty
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Cited by 31 •
2012
Endothelial corneal transplantation is a surgical technique for treatment of posterior corneal diseases. Mechanical microkeratome dissection to prepare tissue results in thinner, more symmetric grafts with less endothelial cell loss and improved outcomes. Dissections can be performed at the eye bank prior to corneal transplantation surgery.
10:52
An Alkali-burn Injury Model of Corneal Neovascularization in the Mouse
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Cited by 75 •
2014
Neovascularization (NV) of the cornea can complicate multiple visual pathologies. Utilizing a controlled, alkali-burn injury model, a quantifiable level of corneal NV can be produced for mechanistic study of corneal NV and evaluation of potential therapies for neovascular disorders.
04:11
Laser-assisted Selective Ablation of Porcine Corneal Endothelial Cells: A Technique to Induce Focused Porcine Corneal Endothelial Injury for Ex Vivo Studies
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2025
This video demonstrates a non-invasive laser-assisted procedure to selectively damage the corneal endothelial cells in the porcine eye. The developed ex vivo model of endothelial cell damage can be used to study diseases of the corneal endothelium.
11:49
The Corneal Micropocket Assay: A Model of Angiogenesis in the Mouse Eye
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Cited by 28 •
2014
The protocol describes the corneal micropocket assay as developed in mice.
FAQs
Tunnel dimensions and depth determine how precisely the passage remains within the corneal stroma while avoiding unwanted disruption of surrounding tissue. Careful control also helps maintain the intended relationship to the central visual axis and supports a stable entry incision. These parameters therefore influence whether the localized intervention can be performed while preserving the cornea’s structural and optical organization.
The corneal stroma contains organized collagen-rich lamellae that can be separated along a planned path. A dissecting instrument or femtosecond laser creates this separation without requiring the passage to cross the central visual axis. Preserving adjacent tissue gives the channel defined boundaries and helps retain the surrounding cornea’s stability during the selected procedure.
Positioning the channel away from the central visual axis allows surgeons to access targeted corneal regions while limiting direct disruption of the area responsible for central vision. This planning principle distinguishes the approach from interventions that would cross the visual center. It is especially relevant when the goal is localized treatment with limited surface and central-corneal disturbance.
Surgeons may separate stromal lamellae with a dissecting instrument or create the planned passage with a femtosecond laser. In either case, the technique must preserve surrounding tissue and maintain a stable entry incision. The source does not establish that one method is universally superior; selection depends on the procedure’s intended access and the need to control tunnel geometry.
A corneal tunnel can provide a route for placing intracorneal ring segments, delivering therapeutic materials, or supporting selected corneal procedures. It is also part of treatment strategies for corneal ectasia, a condition context identified in the source. These applications share a need for localized intervention, allowing the cornea to be addressed without broadly disrupting its surface or central visual axis.
Healing and preservation of the channel are important because the tunnel’s benefits depend on controlled tissue separation and a stable entry site. Surgeons must account for its dimensions, depth, and the condition of surrounding tissue when evaluating the result. Careful control of these features helps limit surface disruption and supports the intended placement or delivery outcome.