An intraocular lens is an implanted lens in the eye. It is usually replacing the existing crystalline lens because it has been clouded over by a cataract, or as a form of refractive surgery to change the eye's optical power. It usually consists of a small plastic lens with plastic side struts, called haptics, to hold the lens in place within the capsular bag inside the eye.

Isotonic eyewash solution is a sterile isotonic solution used to flush particles and irritants from the eyes.

Intense pulsed light (IPL) works on the same principles as lasers in that light energy is absorbed into particular target cells with colour (chromophores) in the skin. It improves the appearance of vascular lesions including spider naevi, port wine stains, broken facial veins, rosy cheeks, thread veins of the legs, mild acne spots, freckles and age marks, and facial lines and wrinkles.

Intra corneal rings are polymethylmethacrylate segments that are surgically fitted into the core corneal stroma to even out the central cornea. It is suitable in optical application for the treatment of various eye conditions like keratoconus, forme frusta keratoconus with mild myopia, post-LASIK ectasia, pellucid marginal degeneration and cornea.

Intracorneal ring implants (INTACS) are a vision correction option to treat low to moderate levels of myopia. It is used to correct myopia in patients who have keratoconus and those who have residual myopia following laser refractive surgery. It is a less invasive treatment option than corneal transplantation for moderate to advanced keratoconus.

Intraocular lens (IOL) inserter is a device for inserting an intraocular lens through an incision into an eye. This system consists of a tube defining a hollow passage, an injector rod longitudinally moveable within the hollow passage and a force transfer assembly coupled to the injector rod. The injector rod has a distal portion adapted to contact the intraocular lens within the hollow passage of the tube to urge the intraocular lens distally through the hollow passage.

Intraocular irrigating solution is used to maintain both the anatomic and physiologic integrity of intraocular tissues. Many physiologic studies performed on the corneal endothelium have confirmed that a solution with a chemical composition similar to aqueous and vitreous humor provides the best protection for intraocular tissues.

Ishihara color blindness test chart is a simple and accurate way to determine congenital, complete, and incomplete color blindness. The charts include four special plates to determine the kind and degree of the defect in color vision. The plates are encased in a specially designed album-type book for ease of handling. Each book includes instructions.

Ishihara seudoisochromatic plate is the most common clinical test for colorblindness. Most ishihara test plates are pointillist circles containing an Arabic numeral, which should be visible (if a little eye-popping) to a normal viewer, but only weakly visible or invisible to a colorblind individual.

Mayo stands are generally available in two designs, both of durable heavy gauge chrome-plated steel tubing. Screw lock adjustment provides secure lock at desired height. Large stainless steel instrument tray is removable for easy cleaning.

Integrated orbital implants are low density spheres of hydroxyapatite or alumina comprising a fully interconnected highly porous network ideal for rapid and complete soft tissue ingrowth.

Infrared photocoagulator laser is indicated for all retinal photocoagulation procedures, such as limited and pan-retinal, transpupillary laser photocoagulation, endophotocoagulation and transscleral photocoagulation, and glaucoma procedures, such as laser trabeculoplasty and iridotomy. It can be used in combination with various delivery systems, such as slit lamps, binocular indirect ophthalmoscopes, endoprobes and transscleral probes.

Infrared pupillometers measure the distance between pupils and also measure the pupil's response to visual stimuli. The main use of infrared pupillometers is to assess patient suitability for refractive surgery. It is used to determine scotopic pupil diameter.

An isotonic saline solution can be substituted for patients with compromised electrolyte status. This is prepared by adding 1 teaspoon of salt and 1 teaspoon of baking soda to 0.5 liter of plain water. It has a similar salt concentration as body fluids. It is one of the most frequently used solutions after nasal surgery.

Illiterate charts tumbling E are recommended for a visual acuity testing procedure for illiterate patients. This chart typically has symbols of a Tumbling E, wherein the person identifies with fingers the direction of the E.

Isolated subtalar arthrodesis is a reliable procedure for pain relief and improved function in patients with isolated subtalar arthritis.

Arthrodesis nails are is ideally suited for tibiotalocalcaneal fusion indications. It affords rigid, load sharing fixation that incorporates a simple nail-mounted, in-line method of compression across the arthrodesis sites. It is usually made of strength and biocompatibility of titanium alloy.

Infant cast boot is made from clown print canvas, with 3 hook and loop closures and a skid resistant rocker sole. Straps of canvas duck have hook and loop closures for a more secure fit. The rocker sole aids in the mobility of the patient and the open toe