Retinol binding protein (RBP) is a single-chain polypeptide glycoprotein, belongs to the alpha-globulin family of human plasma proteins and is the primary plasma transport protein for retinal. It binds retinal in a 1:1 stoichiometry, serving not only to solubilize retinal but also to protect it from oxidation. Once in circulation, the RBP-retinol complex binds to one molecule of transthyretin, which is a plasma thyroxine-binding protein. This complex then delivers retinal to specific receptors of the retina, skin, gonads, lungs, salivary glands, and other tissues.

Rotational atherectomy uses a tiny rotating cutting blade to open a narrowed artery and improve blood flow to or from the heart. It extends narrowed arteries using a high-speed rotational device to sand away plaque. This technique is used in particular situations, such as with plaque with large amounts of calcium or to widen blockages within a stent.

Radiusgauges are available with either a standard or digital display and in either monocular or binocular form. It is used for the measurement of contact lens curvature and thickness.

Routine EEG systems are mobile and versatile, allowing operators in medical centers or physicians' offices to record and review test results on single and compact units. These systems come with an ergonomic, lightweight cart easily wheeled throughout medical facility. The amplifier can be clamped to the cart for easy transport. There is no need to be connected to the network in order to do mobile recordings. The amplifiers have special inputs to accurately record EOG, ECG, EMG, respiratory, oximetry, heart rate, and plethysmography signals when needed.

Retinal thickness analysis is an objective method to assess and quantify the retinal thickness in healthy controls and in diabetics without diabetic retinopathy. It uses a computerized laser slit lamp to measure retinal thickness at the central 20 degrees of the macula, and overlays a map of measurements on the patient's retinal image.

Radial head implants are intended for use in implant arthroplasty associated with comminuted fractures, or rheumatoid, degenerative, or post-traumatic disease of the radial head. It is designed for higher demand patients requiring superior wear characteristics. It restores proper joint function. It helps to prevent proximal migration of the radius due to radial head excision.