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
Synonyms in a broader sense visual hole Definition The pupil forms the black center of the colored iris. It is through this iris that light enters the eye and travels to the retina, where it leads to the signal transduction that is responsible for the creation of a visual impression. The pupil is variable in … Pupil
How big are the human pupils? The size of the human pupil is relatively variable. One of the most important influencing factors is the brightness of the environment. During the day, the pupil has a diameter of about 1.5 millimeters. At night or in darkness the pupil widens to a diameter of eight to even … How big are the human pupils? | Pupil
Pupillary Reflex The adaptation of the pupil to the prevailing light situation is achieved by the so-called pupillary reflex. A distinction is made between the part that receives the information about the exposure and transmits it to the central nervous system (afference) and the part that, after processing this information, leads to the activation of … Pupillary Reflex | Pupil
What can dilated pupils indicate? In darkness, the pupils are dilated to allow as much light as possible to enter the eye. The so-called sympathetic nervous system dilates the pupils. It is particularly active during stress reactions and also increases pulse and blood pressure, for example. In stressful situations, the pupils can dilate accordingly. A … What can dilated pupils indicate? | Pupil
What does “isokor” mean at the pupil? Pupils are called isocor if their diameter is about the same on both sides. Slight side differences of up to one millimeter are still called isocor.Larger differences are no longer isocor, such a state is called anisocor. Since anisocor is an important symptom in a number of diseases, … What does “isokor” mean at the pupil? | Pupil
Synonyms in a broader sense Medical: Corpus vitreum Definition The vitreous body is a part of the eye. It fills a large part of the posterior chamber of the eye and is primarily responsible for maintaining the shape of the eyeball (bulbus oculi). Changes to the vitreous body can lead to visual disturbances in the … Glass body
What is a macular hole? The macula is the point of sharpest vision on the retina. The retina is ultimately a thin layer of nerve cells, the so-called photoreceptors. These are particularly dense in the macula, which is why vision is particularly sharp here. Like every tissue in the body, the retina is a vulnerable … Macular foramen – Dark spot when seeing
Synonyms in a broader sense Vascular skin (Uvea) Medical: Choroidea English: choroid Introduction The choroid is the rear part of the vascular skin (uvea) of the eye. It is embedded between the retina and the sclera as a central sheath. The iris and the ciliary body (corpus ciliare) also belong to the vascular skin. With … Choroid
Physiology The choroid contains many blood vessels. These have a total of two functions. The first important task is to feed the outer layer of the retina. These are mainly the photoreceptors, which receive and transmit the light impulses. The retina also consists of several layers. The inner layers are supplied with blood by a … Physiology | Choroid
The ocular fundus is the posterior part of the eyeball which can be made visible in case of drug-induced pupil dilation. The Latin name for the fundus oculi is Fundus oculi. In order to be able to look at it more closely, one looks through the transparent vitreous body and can illuminate various structures, such … Back of the eye
Diseases The diseases of the ocular fundus can be very diverse and affect different structures. Diseases of the retina are called retinopathies. A common disease of the retina is dabetic retinopathy, which can occur in the context of diabetes. It is the most common reason for early blindness, as it can lead to retinal detachment … Diseases | Back of the eye