Corneal Biomarkers
Corneal Biomarkers - Related Videos
08:36
A Porcine Corneal Endothelial Organ Culture Model Using Split Corneal Buttons
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Cited by 4 •
2019
Here, a step-by-step protocol for the preparation and cultivation of porcine split corneal buttons is presented. As this organo-typically cultivated organ culture model shows cell death rates within 15 days, comparable to human donor corneas, it represents the first model allowing long-term cultivation of non-human corneas without adding toxic dextran.
08:29
Biomarkers in an Animal Model for Revealing Neural, Hematologic, and Behavioral Correlates of PTSD
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Cited by 32 •
2012
We describe a rat model of post traumatic stress disorder (PTSD) that reveals the persistent alterations in neuroendocrine function and the delayed long-term, exaggerated fear response, characteristic of PTSD patients. The animal model and methods described here are useful for correlating biomarkers in brain nuclei, which are mechanistic but cannot be measured in patients, with biomarkers in peripheral white blood cells, which can.
04:17
A Mouse Model for Corneal Neovascularization by Alkali Burn
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Cited by 6 •
2023
This protocol focuses on alkali burn-induced corneal neovascularization in mice. The method generates a reproducible and controllable corneal disease model to study pathological angiogenesis and the associated molecular mechanisms and to test new pharmacological agents to prevent corneal neovascularization.
04:00
Corneal Sensitivity Testing Procedure for Ophthalmologic and Optometric Patients
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Cited by 5 •
2024
Corneal sensitivity testing provides insight into the health of the corneal nerves and helps diagnose ocular surface diseases. We present a concise protocol to qualitatively assess corneal sensitivity that can be readily used by eye care providers across clinical settings.
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.
FAQs
Each biomarker category captures a different level of corneal biology. Molecular indicators can reflect altered tear-fluid constituents or extracellular-matrix composition, cellular indicators can reveal changes in epithelial-cell behavior or nerve function, and structural indicators can show tissue alteration through imaging. Considering these levels together may provide a more complete picture of injury, inflammation, or disease.
These components respond differently to corneal damage or altered physiology, so their signals may provide complementary information. Epithelial-cell behavior can indicate surface disruption, nerve-function changes can reflect altered corneal physiology, and extracellular-matrix changes can suggest tissue remodeling. Interpreting these findings in combination helps connect a measurable feature with the underlying biological process.
Imaging can characterize structural features, while sampling provides access to tear-film or tissue-related material for assessment. Molecular assays then help examine measurable constituents within collected samples. Because these approaches observe different aspects of corneal health, combining them can support more informative evaluation than relying on a single type of measurement.
A general workflow begins by selecting the relevant corneal or tear-film feature, followed by imaging, sampling, or molecular analysis as appropriate. The resulting measurements are interpreted in relation to tissue health, injury, inflammation, or disease. Repeated assessment can then compare findings over time, particularly when researchers are examining treatment response, progression, or tissue repair.
They can support the diagnosis and classification of conditions that affect the cornea, including infection, dry eye, and corneal degeneration. Their value comes from linking measurable molecular, cellular, or structural changes with disease-related tissue status. This makes them useful not only for identifying abnormalities, but also for distinguishing clinical patterns and characterizing how disease affects the cornea.
Measurements collected at different stages can show whether corneal features are changing after treatment or during ongoing disease. A shift in epithelial-cell behavior, nerve function, extracellular-matrix composition, or tear-fluid constituents may provide evidence of altered tissue status. Such longitudinal information can help evaluate tissue repair, follow progression, and support more personalized ocular medicine.