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
Age-related macular degeneration, age-related macular degeneration or AMD for short, is a progressive damage of the epithelial tissue (pigment epithelium) and the photoreceptors in the retina. The damage of the tissue leads to a loss of function and thus to a severe reduction of visual acuity in old age. The following text discusses the definition, … Age-related Macular Degeneration: Causes, Symptoms & Treatment
All processes of new vessel formation that take place in the organism of an adult human are summarized as vascularization, most notably angiogenesis. Neovascularization, on the other hand, is more commonly known as pathological and thus pathologically excessive new formation of vessels. This neovascularization occurs, for example, in the context of cancer and serves to … Neovascularization: Function, Role & Diseases
Eye diseases can affect all components of the visual organ and have various causes such as environmental stimuli, age, or disease. Symptoms can include itchy, reddened and swollen eyes. The responsible specialist, the ophthalmologist, can intervene surgically or replace the lens and meninges with artificial implants in serious cases. Some eye diseases may be prevented … Eye Diseases: Causes, Symptoms & Treatment
A not inconsiderable number of people suffer from them, fear of it, however, in any case most. After all, who wants to have limited eyesight or even lose it completely in the worst case? But the knowledge about the diseases is mostly limited to generalities. For this reason, the purpose of this article is to … Eye Diseases: when the Eyes Suffer
Electroretinogram represents the result of a performed electroretinography, a special functional examination of the retina of the eye. The purpose of the measurement is to check the functionality of the light sensory cells of the retina (cones and rods). The electrical impulses generated by the rods and cones in response to given light stimuli are … Electroretinogram: Treatment, Effect & Risks
The environment in front of the eyes of a person blurred so much that he perceives much only foggy, one speaks of the so-called veil vision. As a symptom of various eye diseases, it can appear in the affected person thereby both gradually and abruptly. At the first sign of veil vision, a doctor should … Veil Vision: Causes, Treatment & Help
Ranibizumab is a drug in the monoclonal antibody drug class that is used to treat macular degeneration. What is ranibizumab? Ranibizumab is a drug in the monoclonal antibody drug class that is used to treat macular degeneration. The drug ranibizumab is a monoclonal antibody fragment (Fab). Monoclonal antibodies are antibodies that are produced by a … Ranibizumab: Effects, Uses & Risks
Tonometry is a diagnostic measurement procedure in ophthalmology (eye care). Special equipment is used to determine the intraocular pressure. An increase in this value may indicate the presence of glaucoma, or glaucoma. What is tonometry? Tonometry is a diagnostic measurement procedure in ophthalmology (eye care). Intraocular pressure is considered an important diagnostic feature of glaucoma … Tonometry: Treatment, Effect & Risks
The retina is located on the back of the inner wall of the eye and is instrumental in creating image information for the brain. Age, disease, and congenital disorders can impede the function of the retina, which has a complex structure, in many ways. A large number of successful therapeutic procedures exist. What is the … Retina: Structure, Function & Diseases
Lutein belongs to the carotenoid group of substances and is known as the eye vitamin. It is produced exclusively in plants, where it functions as an important ingredient of chloroplasts. In the plant organism, it serves as an energy-collecting molecule to effectively utilize solar energy in photosynthesis. What is lutein? Lutein is a carotenoid and, … Lutein: 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
