Laser scanning confocal microscope allows users to perform three-dimensional microscopy of fluorescently labeled specimens or reflective surfaces. This is accomplished by imaging objects through a small pinhole aperture, thereby preventing detection of all light except for that originating from a thin optical section. By collecting a series of optical sections through the thickness of the specimen, images of its three-dimensional organization can be collected, assembled, and evaluated using specialized reconstruction software. Confocal microscopy is particularly well suited to the examination of thick specimens. It is also a useful tool for materials scientists interested in topological characterization of surfaces.

In laser-based point scanning confocal microscope, the excitation laser source is scanned across the specimen in a point-by-point raster pattern, so that, over time, a complete image of the focal plane is collected. The emitted light is then collected by the objective, passed through a pinhole aperture and detected by a photomultiplier tube (PMT). The resulting image is reconstructed and displayed by a computer. It offers some extraordinary advantages. It allows extremely thin optical sectioning of specimens, permitting the viewing of structures and intracellular features. It offers the highest level of confocality and the ability to do very thin optical sections.

Lacrimal system, cannula is a slender tube that can be inserted into a body cavity or duct. It normally comes with a trocar attached, which allows puncturing of the body to get into the intended space.

Lacrimal system, Surgical marking pens are used by surgeons to mark out areas on the skin for incision, are particularly prone to this problem. It is preferable to draw the incision line prior to the injection of local anesthetic solutions.

Laser thermokeratoplasty (LTK) is used to treat farsightedness and astigmatism. During this procedure a laser beam uses heat to shrink and reshape the cornea. Vision is corrected in a matter of seconds, without any cutting or removal of tissue.

Lumbar sacral support improves posture and helps prevent pain by providing compressive support to the lower lumbar and abdominal areas. Its low-height design with a tapered front ensures a comfortable fit. It is lightweight made of latex-free material, which is breathable and stays cool against the skin or over clothes.

Low viscosity bone cement is an acrylic cement-like substance which permits seating and securing of a prosthesis into living bone. It comprises a mixture of a liquid monomer component and a polymer powder component. It maintains a low viscosity for a longer period of time. This cement is intended for syringe or injector gun use only as it is to be used before the cement becomes doughy. It has a viscosity of approximately 20 degrees C., of less than 1500 poise, and preferably less than 1000 poise up to the sixth or seventh minute after the two components are mixed.

Lumbosacral back braces are used to provide support to the lumbar spine. It aids in the relief of mild to moderate low back pain and low back sprains or strains. Some braces also provide compression and warmth to the lower back area.

Laminar orthopedic cushions make longer seating periods possible and provide the extra pressure relief needed to counteract extreme soreness and fatigue. Laminar provides the ultimate in seating comfort and performance.

Lateral tibial insert is slightly concave and is posteriorly sloped to promote natural femoral external rotation during knee flexion.

Heel cups and heel spur cushions provide relief from heel spur pain. It is used to reduce and absorb the shock to the painful area of the heel and also reduces shock to the joints and vertebral column.

Lab based urodynamics system is a diagnostic system used for uroflowmetry, cystometry, leak point pressure, or urethral pressure profiles. It is capable of performing H20 and CO2 cystometry, EMG, LPP, UPP, pressure flow studies, and uroflowmetry.

Laboratory Freezers are used to cool or freeze samples for preservation. A laboratory freezer stores samples at a temperature between - 25 and - 15 degrees celsius. These freezers are used to store biological samples such as vaccines at a much lower temperature. Laboratory freezers are used as incubators that cycle between a heating period and a refrigeration period.

Lumbar Roll is a foam roll cushion designed to correct improper lumbar curve and assist in establishing correct sitting posture. Lumbar roll is a lumbar support designed for use by individuals in need of additional lower back support.

Lithotripter is a device that pulverizes kidney stones and gallstones by passing shock waves through a water-filled tub, in which the patient sits.

Low Frequency Transcutaneous Electrical Nerve Stimulation inhibits nociceptive responses induced by CO(2) laser stimulation in humans. Low-frequency, transcutaneous electrical nerve stimulation reduces aspartare and glutamate release in the spinal cord dorsal horn.

Lead adapter clip provides a rapid, secured, insulated connection of the lead connector end assembly of a cardiac lead. It has an electrode that is adapted to place in or on the body with an external medical device.

Laboratory labels are designed to withstand extreme laboratory environments. The exposed edge on the labels makes peeling easy. It is ideal for equipment assignment, patient tracking, and drug delivery.

Laser eye shields are designed to protect most orbital sizes and allow access to bridge, brow, and temple areas. These are laser-safe for medical lasers with wavelengths between 190 nm-11,000 nm.

Lint free eye spear is a highly absorbent sterile surgical spear. It is specifically designed for LASIK and other surgical procedures. It is used to remove excess fluid and debris from the operative field or from instruments during ophthalmic surgery.

Large external fixator is used for external fracture stabilization at extremities with soft tissue injuries. It is ideal for trauma, foot and ankle or deformity and leg lengthening correction. It is particularly suitable for the treatment of lower limbs. It is intended for rapid, initial immobilization of soft tissue injuries and fractures in severely injured patients.

LB Broth is a nutritionally rich medium used for maintaining and cultivating recombinant strains of Escherichia coli. These strains are generally derived from E. coli K12, which are deficient in B vitamin production. It contains half the sodium chloride level of the Miller formulation of LB Borth. This allows the researcher to select the optimal salt concentration for a specific strain.

LB agar plate is a generic rich media suitable for growing many aerotolerant species of bacteria, including E. coli, Bacillus subtilius, Staphylococcus auerus or Staphylococcus epidermidis and different yeasts including Saccharomyces and Candida species. Many kinds of molds can also grow.