Ophthalmic Cautery
Ophthalmic Cautery - Related Videos
01:23
Ophthalmic Drug Delivery Systems
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2026
Ophthalmic drug delivery faces major limitations due to poor absorption across the corneal membrane. This process is primarily driven by diffusion and is influenced by two main factors: the physicochemical properties of the drug and tear drainage. Most ophthalmic drugs, such as pilocarpine, epinephrine, atropine, and local anesthetics, are weak bases. They are typically formulated at an acidic pH to enhance chemical stability. However, this leads to high ionization, reducing their ability to...
02:37
Ophthalmic Drug Delivery for Noninvasive Neuromodulation in a Mouse Model
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2025
Source: Zhan, J., et al. Non-invasive Strategies for Chronic Manipulation of DREADD-controlled Neuronal Activity. J. Vis. Exp. (2019)This video demonstrates a non-invasive ophthalmic drug delivery method for targeted neuromodulation. The drug is delivered via eye drops, absorbed into the circulation, crosses the blood-brain barrier, and activates specific neuronal receptors.
03:04
Induction of Elevated Intraocular Pressure in a Rat Model
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2025
Source: Lani-Louzada, R., et al., Full-Circle Cauterization of Limbal Vascular Plexus for Surgically Induced Glaucoma in Rodents. J. Vis. Exp. (2022)This video demonstrates the induction and monitoring of elevated intraocular pressure (IOP) in a rat model. The process involves cauterizing the limbal blood vessels, resulting in vessel occlusion and elevated IOP. The rat is then allowed to recover, and IOP is regularly monitored in both the experimental and control eyes for comparison.
06:53
Heterotopic Hindlimb-to-Neck Transplantation in the Mouse: A Supermicrosurgical Model of Vascularized Composite Allotransplantation
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2026
We present a reproducible mouse model of heterotopic hindlimb-to-neck vascularized composite allotransplantation. This supermicrosurgical protocol, involving 0.3-0.5 mm vessel anastomoses, integrates nylon filament guidance and venous cuffing. It provides a reliable platform for translational studies on tolerance, ischemia-reperfusion injury, and immunological mechanisms in vascularized composite allotransplantation.
12:06
Optic Nerve Transection: A Model of Adult Neuron Apoptosis in the Central Nervous System
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Cited by 40 •
2011
Optic Nerve transection is a widely used model of adult CNS injury. Ninety percent of retinal ganglion cells (RGCs) whose axons are completely transected (axotomy) die within 14 days after axotomy. This model is easily amenable to experimental manipulations and highly reproducible.
FAQs
At the treatment site, applied energy raises tissue temperature or delivers an electrical effect sufficient to denature proteins. The altered proteins contract and stabilize the vessel wall, allowing small vessels to seal rather than continue bleeding. This localized coagulation supports hemostasis while preserving a workable field for the surgeon.
Energy level, contact time, and placement jointly determine the balance between effective coagulation and collateral injury. Excessive or poorly positioned application could affect surrounding ocular structures, whereas insufficient control may fail to secure small vessels. Careful adjustment therefore supports hemostasis without sacrificing the precision required in delicate eye surgery.
Targeted placement concentrates treatment at the bleeding site instead of exposing nearby tissue unnecessarily. This matters because structures around the eye are delicate, and neuro-ophthalmic operations may involve the retina, optic nerve, orbit, or adjacent vessels. Site-specific application helps preserve surrounding anatomy while maintaining the intended operative effect.
In neuroscience, the technique is relevant when procedures involve the retina, optic nerve, orbit, or vascular tissues next to these structures. Bleeding in such locations can interfere with visualization and surgical precision. By supporting local hemostasis, cautery can help maintain the operative field during neuro-ophthalmic work in anatomically sensitive regions.
During use, the surgeon identifies the intended site, applies controlled energy for an appropriate contact time, and limits treatment to the target. The purpose of this sequence is to seal small vessels while reducing exposure of adjacent tissue. Maintaining these controls can keep bleeding manageable and the field clear for subsequent operative steps.
Successful application can improve visibility by reducing bleeding, which supports more precise manipulation around ocular and neuro-ophthalmic structures. The described benefits include improved operative safety and postoperative recovery, provided energy delivery and placement are controlled. The result is not simply vessel sealing, but a more manageable surgical environment for delicate procedures.