Corneal Aberration
Corneal Aberration - Related Videos
08:48
Analysis of the Ambient Particulate Matter-induced Chromosomal Aberrations Using an In Vitro System
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Cited by 3 •
2016
This protocol describes techniques for the quantification and characterization of chromosomal aberrations in vitro in RAW264.7 mouse macrophages after treatment with ambient air particulate matter.
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.
10:14
Detection of Inter-chromosomal Stable Aberrations by Multiple Fluorescence In Situ Hybridization (mFISH) and Spectral Karyotyping (SKY) in Irradiated Mice
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Cited by 5 •
2017
The present protocol describes the usefulness of multiple fluorescence in situ hybridization (mFISH) and spectral karyotyping (SKY) in identifying inter-chromosomal stable aberrations in the bone marrow cells of mice after exposure to total body irradiation.
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.
FAQs
Corneal aberrations are commonly considered in two optical categories. Lower-order errors include defocus and astigmatism, while higher-order aberrations cannot be described by those basic refractive errors. This distinction matters because a patient’s visual-quality problem may persist even when ordinary defocus or astigmatism does not fully account for the observed optical distortion.
Different parts of the corneal surface may bend incoming light by different amounts because their shape or refractive power is not uniform. As a result, light does not converge precisely on the retina. This uneven optical behavior helps explain why visual quality depends on more than a single overall refractive measurement.
Keratoconus and corneal injury are clinically important settings in which corneal optical distortions may need careful assessment. Measuring aberrations in these conditions helps clinicians characterize their contribution to visual symptoms and provides information for evaluating the cornea before selecting or assessing an appropriate corrective strategy.
Corneal topography and wavefront aberrometry are the principal measurement approaches identified for these distortions. Their role is to quantify optical irregularities rather than rely only on a conventional description of defocus or astigmatism. The resulting measurements support assessment of visual symptoms and decisions about corrective planning.
Measurements of corneal aberrations can guide contact-lens and refractive-surgery planning by showing how the cornea’s optical imperfections contribute to visual quality. Clinicians can use this information alongside the patient’s symptoms to assess the existing optical problem and consider how a planned correction should address the measured distortions.
Comparing aberration measurements with visual symptoms can help clinicians and researchers assess the optical status of the cornea in a patient or study group. The same measurements can also be used to evaluate outcomes after a corrective approach, including refractive surgery, or in eyes affected by corneal injury or keratoconus.