Almost everyone has experienced it: tension headache is an annoying condition that severely limits quality of life, especially in chronic cases. The causes are varied and not yet fully understood. Nevertheless, there are effective treatments that can significantly alleviate tension headache. What is tension headache? Infographic on the causes and symptoms of migraines and headaches. … Tension Headache: Causes, Symptoms & Treatment
Dry eyes plague more and more people – they itch and burn. Dry eyes can sensitively reduce the quality of life if the condition persists permanently and is not treated sensibly. However, if you follow a few tips and tricks and inform yourself about the causes, you will not have to suffer from dry eyes … Dry Eyes: Causes, Treatment & Help
Photodynamic therapy represents a comparatively gentle and at the same time effective treatment procedure for superficial skin tumors. With the help of so-called photosensitizers and light waves, substances are released in the organism that specifically lead to cell death of the diseased cells. What is photodynamic therapy? Photodynamic therapy represents a comparatively gentle yet effective … Photodynamic Therapy: Treatment, Effects & Risks
The yellow spot, also called the macula lutea, is a small area on the retina through which the visual axis passes. Within the macula lutea is the zone of sharpest vision (fovea) and also of color vision, because the approximately 6 million cone-shaped M, L, and S color sensors are concentrated almost exclusively in the … Yellow Spot: Structure, Function & Diseases
Keratoconjunctivitis sicca is the summary term for dry eyes, without consideration of possible causes. The term dry eye syndrome is also used synonymously. Symptoms affect the cornea and conjunctiva, a mucosa-like tissue that connects the eyeball to the eyelids. If left untreated, dry eye can lead to secondary damage. What is keratoconjunctivitis sicca? Keratoconjunctivitis sicca … Keratoconjunctivitis Sicca: Causes, Symptoms & Treatment
Photoreceptors are light-specialized sensory cells on the human retina. They absorb various electromagnetic light waves and convert these stimuli into bioelectrical excitation. In hereditary diseases such as retinitis pigmentosa or cone-rod dystrophy, the photoreceptors perish bit by bit until blindness occurs. What are photoreceptors? Photoreceptors are light-sensitive sensory cells that are specialized for the visual … Photoreceptors: Structure, Function & Diseases
The fovea centralis is the name given to a small depression in the center of the yellow spot of the human retina. It is the region of sharpest vision because the fovea centralis exclusively contains three different types of cones (photoreceptors) for color vision in the wavelength ranges for red, green, and blue. The more … Fovea Centralis: Structure, Function & Diseases
CHARGE syndrome is a genetic disorder with multiple symptoms or clinical pictures. Most notable among these are a colomb of the eye, heart defects, atresia of the choans, decreased length growth and developmental delay, genital abnormality, and abnormality of the ear. Surgical correction of the malformations is necessary. Many sufferers can lead relatively normal lives … CHARGE Syndrome: Causes, Symptoms & Treatment
The name of hemoglobin is derived from the Greek words for blood and sphere. Thus, hemoglobin is a spherical component of human blood. What is hemoglobin? Hemoglobin, as a component of human blood, is found in red blood cells (called erythrocytes) and is also known as red blood pigment. Hemoglobin owes this title to the … Hemoglobin: Function & Diseases
Corneal opacity is a disease of the cornea, which is comparatively common. Nevertheless, it is relatively unknown, which is due to its many causes. It is also difficult to treat. What is corneal opacity? A corneal opacity is a reduced transparency of the cornea. The condition most often results from pathologic or degenerative changes in … Corneal Opacity: Causes, Symptoms & Treatment
