Stand magnifiers incorporate a high-power magnifying lens in a housing that presets the lens at the appropriate focal distance for its strength, without the user having to maintain the working distance or hold it steady. It is a very useful option, when a person has difficulty holding a hand magnifier steady. These magnifiers stand flat on the page and the user slides it along while looking straight down through the lens. It is also available with and without self-contained illumination and may be either battery-powered or plug-in.

Scanning confocal microscopes is a non-contact optical imaging profiler. The extremely high light efficiency of the illumination hardware and the high contrast algorithms are the main advantages of confocal arrangement, which make the system ideal for measuring steep slopes, rough and low reflective surfaces and samples containing dissimilar materials. It offers a very broad range of magnifications and numerical apertures.

Single prong skin hooks can be used to retract the skin and reveal the underlying vessel wall. It is employed to elevate the fascia to facilitate safe and rapid closure.

Selective laser trabeculoplasty is a great advance in the surgical treatment of intraocular pressure (IOP) in patients with open-angle glaucoma. It works by using a specific wavelength to irradiate and target only the melanin-containing cells in the trabecular meshwork, without incurring collateral thermal damage to adjacent non-pigmented trabecular meshwork cells and underlying trabecular beams. When treated with SLT, a primarily biologic response is induced in the trabecular meshwork, which involves the release of cytokines that trigger macrophage recruitment and other changes leading to IOP reduction.

Surgicel is oxidized regenerated cellulose hemostatic agent. It is cellulose of varied carboxyl content retaining the fibrous structure. It is used to control post-surgical bleeding. It is used as a local hemostatic and as a matrix for normal blood coagulation.

Soft contact lens rinsing solutions provide the protection of hydrogen peroxide for patients. It cleans accumulate protein and other hard-to-remove deposits, which interfere with wearing comfort and clear vision.

Soft contact lens storage solutions offer two kinds of moisturizers, essential electrolytes and taurine. It cleans, rinses, disinfects, and removes protein. It can store and condition any soft contact lens, including conventional and silicone hydrogel lenses.

Stereoscopic vision and depth perception testing is performed to diagnose stereo and binocular vision in children and adults. The test can be used for testing and training of binocularity, stereopsis, visual attention, and depth perception.

Spectrophotometers are used to measure an object's reflection characteristics throughout the visible spectrum. Double-beam spectrophotometers monitor a reference standard to compensate dynamically for fluctuations in source output, detector response, and atmospheric absorption to increase the instrument's stability. Some spectrophotometers allow the user to vary the size of the area measure. For most applications, the largest are possible should be measured.

Serum total protein is a biochemical test for measuring the total amount of protein in blood plasma or serum. Protein in the plasma is made up of albumin and globulin. The globulin in turn is made up of ?1, ?2, ?, and ? globulins. These fractions can be quantitated using protein electrophoresis, but the total protein test is a faster and cheaper test that estimates the total of all fractions together.

Surgical headlight is a device attached to the user's head and used as a supplementary or auxiliary light source to illuminate the oral cavity during surgical procedures. It is important for adequate visualization of the surgical site in DCR surgery.

Slide staining machine has a rectangular body, which includes an upper rectangular frame and a lower rectangular frame. These frames are aligned and detachably connected together so that multiple microscope slides may be clamped there between for staining at the same time. Knobs with threaded bolts projecting there from fasten the upper and lower frames together.

Synthetic spacers are available in a variety of formats to fulfill the range of biomechanical requisites for load sharing, elasticity, strength, and shape. Spacers are also available in radiolucent materials for ease of radiographic assessment.

Stereotactic frame operates on a principle of fixed and moveable fiducial markers around the frame be it cylindrical or cuboid. It has a ring, which is used for a radiological treatment in the head area. It can be supported under pressure on a patient's skill bone by several posts fastened on the ring. A measuring device is provided on at least one post to measure the material deformation on the post resulting from the pressure.

A scalpel is a very sharp knife used for surgery, anatomical dissection, and various arts and crafts. Scalpel may be disposable or re-usable. Re-usable scalpel has attached resharpenable blades or non-attached replaceable blades. Disposable scalpel has a plastic handle with an extensible blade and is used once, then the entire instrument discarded. Scalpel blade is made of high carbon steel.

A snellen chart is an eye chart used by eye care professionals and others to measure visual acuity. It is generally printed with eleven lines of block letters. The first line consists of one very large letter. Subsequent rows have increasing numbers of letters and decreasing in size. A patient taking the test covers one eye, and reads the letters of each row, beginning at the top. The smallest row that can be read accurately indicates the patient's visual acuity in that eye.

Saline solution is a sterile solution of sodium chloride in water, frequently used for intravenous infusion, rinsing contact lenses, and nasal irrigation. It is available in various formulations for different purposes. It is also used in molecular biology, biochemistry, and cell biology experiments.

Sinskey hook is designed to capture the intraocular lens eyelet. It can be used to achieve blunt separation of the stromal layers to the full depth of the incision by gently stroking back and forth the full length of the incision until containing the original base.

Surgical sealant is indicated for use in vascular reconstructions to achieve adjunctive hemostasis by mechanically sealing areas of leakage. It is a completely synthetic sealing agent for vascular reconstruction. It seals almost immediately.

A single chamber ICD is a small implantable device that looks similar to a pacemaker. It is designed to slow down a fast heart rate. It detects arrhythmias (both bradyarrhythmia and tachyarrhythmia) and delivers electrical therapy-pacing pulses or defibrillation therapy as necessary. It uses one pacing lead, placed in or on the ventricle. It defibrillates the ventricle and paces the ventricle.