Products Dextrans are commercially available in the form of ophthalmic products. Structure and properties Mixture of polysaccharides. Types: Dextran 1, Dextran 40, Dextran 60 for the preparation of parenterals. Effects Dextran (ATC S01XA20) is a natural macromolecular polysaccharide. It forms a persistent film of moisture on the cornea, thereby counteracting the symptoms of mechanical corneal … Dextrane
Symptoms The two leading symptoms of Sjögren’s syndrome (pronounced “Schögren”) are dry mouth and dry eyes with associated symptoms such as conjunctivitis, difficulty swallowing and speaking, gingivitis, and tooth decay. The nose, throat, skin, lips and vagina are also frequently dry. In addition, many other organs may be affected less frequently and include muscle and … Sjögren’s Syndrome: Causes and Treatment
Products Polysaccharides are present as excipients and active ingredients in numerous pharmaceuticals. They play a fundamental role in foods for nutrition. Polysaccharides are also known as glycans (glycans). Structure and properties Polysaccharides are polymeric carbohydrates composed of hundreds to thousands of sugar units (monosaccharides). As few as 11 monosaccharides are referred to as polysaccharides. They … Polysaccharides
Products Polyvinyl alcohol is used as an excipient in many drugs, especially in film-coated tablets. Structure and properties Polyvinyl alcohol exists as a yellowish white and odorless powder or as translucent granules and is soluble in water. Different types are distinguished. The substance is obtained by polymerization of vinyl acetate followed by partial or almost … Polyvinyl Alcohol
Symptoms Bleeding in the eye manifests as bright red and painless spots between the conjunctiva and sclera of the eyeball. They usually occur unilaterally and are not accompanied by visual disturbances or inflammation. Mild irritation may occur. The entire conjunctiva may also be hypophagic (hyposphagma). Causes Hemorrhage occurs as a result of damage to blood … Bleeding in the Eye
Products Isotretinoin is commercially available in capsule and gel form (Roaccutane, generics). It has been approved in many countries since 1983 (United States: 1982, Accutane). This article refers to the capsules. See also under isotretinoin gel. Structure and properties Isotretinoin (C20H28O2, Mr = 300.4 g/mol) exists as a yellow to light orange crystalline powder that … Isotretinoin
Products Tear substitutes are available as eye drops or eye gels in the form of single doses (monodoses, SDU, UD) and in vials. The monodoses do not contain preservatives and are usually suitable for contact lens wearers. The vials may contain a preservative and have a limited shelf life after opening. However, there are those … Tear Substitute
Products Various eye drops and eye gels containing hyaluronic acid are commercially available. These are registered medicinal products (e.g., Lacrycon) and medical devices (e.g., Bepanthen eye drops). Structure and properties Hyaluronic acid is usually present in the preparations in the form of the sodium salt sodium hyaluronate. Sodium hyaluronate is a natural glycosaminoglycan composed of … Hyaluronic Acid Eye Drops
Symptoms Symptoms of allergic conjunctivitis include itching, red eyes, eye watering, a thin discharge, and sneezing. The conjunctiva may be swollen, making it appear glassy. The itching and red eyes are particularly characteristic of the disease. Causes The inflammation is often caused by a pollen allergy (hay fever). In this case, it is also called … Allergic Conjunctivitis
Delineation The fact that medicinal products, food supplements and medical devices are not one and the same is often known only to experts. However, there are important differences between the categories, which concern, for example, legislation and regulatory requirements. This article refers primarily to the so-called , which are similar to medicinal products. In addition, … Medical Devices
Symptoms Bacterial conjunctivitis usually begins first in one eye and may spread to the second. Whitish-yellow smeary purulent secretions are discharged, causing conglutination and crusting, especially in the morning after sleep. The conjunctiva is reddened and blood may accumulate due to increased blood flow. A foreign body sensation and itching often occur. Other possible symptoms … Bacterial Conjunctivitis
Symptoms Possible symptoms of viral conjunctivitis include unilateral or bilateral redness, itching, burning, eye tearing, a foreign body sensation, lymph node swelling, and bleeding. It is often accompanied by inflammation of the cornea (keratitis). Itching, watery eyes, bilateral findings and other allergic symptoms indicate allergic conjunctivitis. However, differentiation based on clinical signs is generally difficult … Viral Conjunctivitis
