Myopia: Description Myopia is a congenital or acquired visual defect of the eye. People who are short-sighted can usually still see well up close, while objects in the distance appear blurred (the opposite is true for long-sighted people). A short-sighted person therefore does not generally have poorer vision. At close range, they may even be … Nearsightedness (Myopia): Causes, Therapy
Hydrophthalmos is the term used for enlargement of one or both eyes that is due to impaired aqueous humor outflow. Hydrophthalmos is associated with the congenital form of glaucoma. It is treated surgically. What is hydrophthalmos? The eye is a part of the central nervous system and enables visual impression through receptors and their connection … Hydrophthalmos: Causes, Symptoms & Treatment
An intraocular lens is an artificial lens that is inserted into the eye during a surgical procedure. The artificial lens remains in the eye permanently and significantly improves the patient’s vision. What is an intraocular lens? An intraocular lens is an artificial lens that is inserted into the eye during a surgical procedure. Intraocular lenses … Intraocular Lens: Function, Task & Diseases
Presbyopia, presbyopia or presbyopia is the cause that most people have to buy reading glasses from about 45 years. Presbyopia is understood to be a normal defective vision, which is caused by getting older. What is presbyopia (presbyopia of old age)? Presbyopia does not count in the sense directly to a refractive error, such as … Presbyopia (Age-Related Long-Sightedness): Causes, Symptoms & Treatment
So-called retinal dysplasia is a pathological malformation of the human retina. In most cases, it is a genetic condition. Retinal dysplasia is often manifested by the appearance of gray lines or dots in focus, distortion of areas, or retinal detachment. What is retinal dysplasia? Hereditary retinal dysplasia is based on defective development of the retina … Retinal Dysplasia: Causes, Symptoms & Treatment
Brittle bone disease or osteogenesis imperfecta is a genetic disease in which the collagen balance is disturbed and, as a result, bones break easily and become deformed. The course of brittle bone disease depends on the type of gene damage. What is brittle bone disease? Brittle bone disease is an inherited disorder in which collagen … Brittle Bone Disease (Osteogenesis Imperfecta): Causes, Symptoms & Treatment
Dermotrichia syndrome is a disease that usually has genetic causes. Consequently, affected patients suffer from dermotrichia syndrome from birth. At the same time, previous observations show that the disease occurs on average only with low frequency in individuals. Dermotrichia syndrome is essentially characterized by three typical complaints. These are alopecia, ichthyosis and photophobia. What is … Dermotrichia Syndrome: Causes, Symptoms & Treatment
Introduction A vitreous detachment is a lifting of the vitreous body from the surrounding structures. A distinction is made between anterior and posterior vitreous detachment, with the posterior form occurring much more frequently. In this case the vitreous detachment detaches from the retina. Mostly this is related to a liquefaction of the vitreous body in … Vitreous detachment
To be able to see sharply again – without glasses or contact lenses – that is what LASIK promises. LASIK (laser in situ keratomileusis) is a laser eye surgery procedure performed since 1990. The goal is the correction of optical refractive errors. LASIK is in demand: in Germany alone, the number of laser eye surgeries … LASIK: Treatment, Effect & Risks
Definition Visual acuity (visual acuity, visual acuity, minimum separable) indicates the measurable degree of ability to recognize patterns and contours in the outside world as such. Minimum visibile Minimum visibile is the limit of visibility. This is reached when objects that are viewed and imaged on the retina can no longer be distinguished as contour … The visual acuity
Physiology of visual acuity Human visual acuity depends on several sizes: Physically the size of the pupil limits the resolution of the eyeball, physiologically the resolution is determined by the density of the receptors (rods and cones) and the signal processing of the receptive fields of the retina. The resolution reaches its maximum value when … Physiology of visual acuity | The visual acuity
The human face is capable of illustrating expressions of emotion through facial expressions, which is made possible with the multitude of muscles found in the face. Because of the versatile features and the many sensitive parts that the face contains, various forms of disease can occur. The medical aspects of the face are outlined below. … Face: Structure, Function & Diseases
