Noninvasive Intraocular Surgery
Noninvasive Intraocular Surgery - Related Videos
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.
10:02
Use of Rabbit Eyes in Pharmacokinetic Studies of Intraocular Drugs
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Cited by 59 •
2016
Rabbits are widely used to study the pharmacokinetics of intraocular drugs. We describe a method for conducting pharmacokinetic studies of intraocular drugs using rabbit eyes.
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.
09:31
Noninvasive Blood Pressure Measurement Techniques
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2023
Source: Hamna J. Qureshi and Craig J. Goergen, Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana Here we will highlight the key similarities and differences of noninvasive blood pressure measurement techniques between humans and rodents and examine the engineering principles that govern blood pressure. The principles that govern current cuff technology to acquire systolic and diastolic pressures will also be discussed. Commercially available cuffs that connect...
04:48
Noninvasive Determination of Vortex Formation Time Using Transesophageal Echocardiography During Cardiac Surgery
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2018
We describe a protocol to measure vortex formation time, an index of left ventricular filling efficiency, using standard transesophageal echocardiography techniques in patients undergoing cardiac surgery. We apply this technique to analyze vortex formation time in several groups of patients with differing cardiac pathologies.
FAQs
Precision comes from concentrating laser pulses or another modality on a selected intraocular structure rather than broadly affecting the eye. This approach is intended to alter, remove, or reshape the treatment target while limiting injury to nearby tissues. The degree of selectivity depends on the technology used and the ocular disease being addressed.
Protecting adjacent structures helps reduce the tissue disruption associated with treatment and may support a faster recovery. This consideration is especially important because ocular procedures can involve closely positioned tissues, including the cornea, lens, and retina. The expected benefit must still be weighed against the safety and effectiveness of the specific technique and clinical indication.
Safety and effectiveness depend on more than the use of focused energy. The selected technology, the structure being treated, the intended tissue change, and the underlying ocular condition all influence outcomes. Consequently, a technique that is appropriate for one clinical indication may not provide the same balance of precision, tissue preservation, or recovery for another.
They can contribute to planning by linking the target structure, the intended tissue effect, and the method of energy delivery. Clinicians can consider whether a selected area should be altered, removed, or reshaped while minimizing disruption elsewhere. This framework helps align the procedure with the affected ocular tissue and the specific disease being managed.
The relevant treatment site may include the cornea, lens, retina, or other intraocular tissues. The choice depends on the disease and on which structure requires alteration, removal, or reshaping. This broad tissue range makes the approach relevant to multiple areas of ocular medicine, while the exact application remains dependent on the technology and clinical indication.
Evaluation can consider whether the intended ocular structure was changed as planned, whether surrounding tissue remained protected, and how recovery progresses. Potential advantages include less surgical trauma, faster recovery, and improved procedural precision. These are possibilities rather than universal results, because outcomes vary with the modality, treated tissue, and condition under management.