Cataract Coexistence
Cataract Coexistence - Related Videos
02:57
Assessing the Coexistence of T4 Bacteriophage and E. coli in Murine Fecal Samples
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2026
Source: Pett, N., et al. T4 Bacteriophage and E. coli Interaction in the Murine Intestine: A Prototypical Model for Studying Host-Bacteriophage Dynamics In Vivo. J. Vis. Exp. (2024).This video demonstrates the in vivo interaction between T4 bacteriophage and E. coli in the murine intestine, and the fecal spot plating method to quantify their coexistence by measuring bacterial colonies and phage plaques.
13:56
Characterization of Molecular Mechanisms of In vivo UVR Induced Cataract
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Cited by 4 •
2012
Cataract is the leading cause of blindness in the world. Solar ultraviolet radiation (UVR) is the main risk factor for cataract development. An animal model of far UVR-B induced cataract was developed. In this article we describe methods for investigation of cataract formation: exposure to UVR, quantitative RT-PCR and immunohistochemistry.
05:19
Modeling Cataract Surgery in Mice
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Cited by 3 •
2023
This method models cataract surgery in vivo by removing lens fiber cells from adult mice and leaving behind the capsular bag with attached lens epithelial cells (LECs). The injury response is then assessed at various times post-surgery using molecular and morphological criteria.
07:53
Establishment of a Clinically Relevant Ex Vivo Mock Cataract Surgery Model for Investigating Epithelial Wound Repair in a Native Microenvironment
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Cited by 13 •
2015
Described here is the establishment of a clinically relevant ex vivo mock cataract surgery model that can be used to investigate mechanisms of the injury response of epithelial tissues within their native microenvironment.
04:59
Rotating the Intraocular Lens to Prevent Posterior Capsular Opacification in Cataract Surgeries
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Cited by 1 •
2023
The present protocol describes removing residual epithelial cells by rotating the intraocular lens in extracapsular cataract surgery without extra tools for preventing posterior capsular opacification.
FAQs
Visual loss in Cataract Coexistence can arise from more than one optical or neural pathway. Lens opacity scatters and absorbs light before it reaches sensory tissues, while glaucoma, age-related macular degeneration, diabetic retinopathy, or corneal disease may affect the optic nerve, retina, or cornea. These combined effects can make visual impairment complex and limit the improvement expected from treating the lens alone.
Reduced visual function may reflect the lens opacity, damage to the retina or optic nerve, corneal disease, or several of these processes at once. Because different disorders can produce similar visual complaints, symptoms alone may not identify the main source of impairment. This overlap makes structural examination and visual-function assessment important for interpreting the patient’s condition.
The site of additional damage helps determine how much vision can recover when the lens opacity is treated. A cataract affects incoming light, whereas retinal, optic-nerve, or corneal disease can continue to impair visual function independently. Consequently, coexisting disease may limit recovery even when the lens becomes clearer, making outcome estimates dependent on more than the cataract itself.
Examining only the lens could overlook disease that contributes substantially to visual impairment. Assessment of the retina, optic nerve, and visual function helps distinguish the effect of the opacity from damage caused by glaucoma, macular degeneration, diabetic retinopathy, or other disorders. This broader evaluation supports more accurate interpretation of symptoms and more realistic expectations about treatment.
A comprehensive evaluation considers the lens together with the retina, optic nerve, and visual function. The purpose is to identify whether another eye disorder accompanies the opacity and to determine how each finding may affect vision. This information gives clinicians a basis for estimating likely outcomes, discussing cataract surgery, and recognizing the need for continued management of other disease.
Findings from the lens, retina, optic nerve, and visual-function assessment help clinicians decide whether cataract surgery is appropriate and how its potential benefit should be judged. Surgery may improve the light-scattering effect of the opacity, but associated retinal, optic-nerve, or corneal disease can restrict visual recovery. The examination therefore informs both treatment planning and outcome estimation.
Counseling should explain that removing or treating the lens opacity may not eliminate all visual limitations when another disorder affects the retina, optic nerve, or cornea. Patients can then understand why improvement may be incomplete or difficult to predict. Discussing these findings also supports planning for ongoing treatment of the accompanying condition after cataract-related decisions are made.