Retinal Degeneration
Retinal Degeneration - Related Videos
02:56
Modeling Retinal Degeneration and Regeneration in Zebrafish Using a Focal Laser Injury
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2025
This video demonstrates a procedure to induce retinal degeneration in adult zebrafish using laser injury. The laser targets photoreceptor cells in the retina, triggering cell death and a degenerative process. This damage activates Müller glia (MG) cells, leading to their dedifferentiation into stem cell progenitors that aid in retinal regeneration.
06:27
Müller Glia Cell Activation in a Laser-induced Retinal Degeneration and Regeneration Model in Zebrafish
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Cited by 13 •
2017
The zebrafish is a popular animal model to study mechanisms of retinal degeneration/regeneration in vertebrates. This protocol describes a method to induce localized injury disrupting the outer retina with minimal damage to the inner retina. Subsequently, we monitor in vivo the retinal morphology and the Müller glia response throughout retinal regeneration.
13:12
Partial Optic Nerve Transection in Rats: A Model Established with a New Operative Approach to Assess Secondary Degeneration of Retinal Ganglion Cells
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Cited by 7 •
2017
Secondary degeneration of retinal ganglion cells (RGCs) occurs commonly in glaucoma. This study describes an innovative operative approach for partial optic nerve transection. The use of this space-saving operative approach extends the model's application range, and allows exploration of secondary injury mechanisms in RGCs in a new way.
07:22
Quantitative Fundus Autofluorescence for the Evaluation of Retinal Diseases
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Cited by 22 •
2016
The retinal pigment epithelium (RPE) supports the sensory retina through recycling visual cycle byproducts, which accumulate as lipofuscin. These products are autofluorescent and can be qualitatively imaged in vivo. Here, we describe a method to quantitatively image RPE lipofuscin using confocal scanning laser ophthalmoscopy.
10:32
Transcriptomic Analysis of Human Retinal Surgical Specimens Using jouRNAl
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Cited by 6 •
2013
We used retinal samples from retinectomy for a transcriptomic analysis of retinal detachment. We developed a procedure that allows RNA conservation between the surgical blocks and the laboratory. We standardized a protocol to purify RNA by cesium chloride ultracentrifugation to assure that the purified RNAs are suitable for microarray analysis.
FAQs
Damage to photoreceptors can disrupt phototransduction, the cellular process that converts light into signals for visual processing. Injury to the retinal pigment epithelium can additionally interfere with cellular maintenance that supports retinal function. Studying both compartments helps researchers connect structural or cellular injury with impaired signaling and progressive visual consequences.
Inherited mutations, aging, metabolic stress, inflammation, and other injury represent distinct initiating conditions that can converge on retinal cell dysfunction and tissue damage. Considering these factors together allows biological studies to examine both genetic vulnerability and environmental or physiological stress. This broad view is important when degeneration arises through different pathways yet affects visual function.
Inherited mutations point to a genetic basis, whereas aging, metabolic stress, inflammation, or other injury identify non-genetic contexts that may also damage retinal cells and supporting tissues. Separating these contributors helps investigators choose relevant disease models and evaluate whether a finding reflects mutation-associated vulnerability, broader cellular stress, or tissue injury.
Disease models allow investigators to examine retinal degeneration under controlled biological conditions and connect initiating factors with cellular outcomes. They can support studies of inherited mutations, aging, metabolic stress, inflammation, or injury, depending on the research question. These models provide a foundation for evaluating biomarkers and exploring gene-based, cell-replacement, or protective therapeutic approaches.
In retinal degeneration research, biomarkers are investigated to improve diagnosis and identify disease-related biological changes. Their value lies in linking observations from disease models or affected tissue with retinal damage. Developing useful biomarkers can strengthen the connection between biological research and clinical evaluation, helping guide the investigation and assessment of potential interventions.
Gene-based interventions, cell replacement, and protective therapies address retinal degeneration from different therapeutic angles. Gene-based approaches explore intervention at the genetic level, cell replacement considers restoring lost or damaged cellular components, and protective therapies focus on preserving retinal cells or tissues. Comparing these directions helps researchers match treatment development to the biological problem under study.
In biology, this topic provides a way to study how neural tissues respond to genetic and environmental stress. Findings can inform work on disorders such as retinitis pigmentosa and age-related macular degeneration while connecting basic cellular research with diagnosis and treatment development. The research framework therefore spans mechanisms, disease modeling, and therapeutic planning.