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
Anatomy & Physiology The colored ring of our eye/eye color is called iris (rainbow skin). The iris consists histologically of several layers. The layer that is decisive for the eye colour is called stroma iridis, where stroma means connective tissue. This layer consists mainly of collagen fibres and fibroblasts, i.e. cells that produce components of … How does eye colour come about?
Interesting facts about eye colour About 90% of the world population has brown eyes. – Especially among Europeans, most newborns are born with blue eyes. The formation of melanin by the melanocytes does not begin until the first weeks of life, so that the final eye colour only shows after a few months to years. … Interesting facts about eye colour | How does eye colour come about?
Different eye colour between the eyes A difference in eye color between the two eyes of a person is medically called iris heterochromia. This can be congenital due to genetic dispositions or genetic mutations. If someone is born with heterochromia, one should clarify whether a syndrome may also be associated with hearing loss. Furthermore, a … Different eye colour between the eyes | How does eye colour come about?
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
Summation is a bodily process within the visual process. The following article deals with the clarification of terms as well as the function of summation and pursues the question, what do affected persons perceive, in whom the process of summation is disturbed? What are the clinical pictures within this framework? What is summation? Summation is … Summation: Function, Tasks, Role & Diseases
Definition A blind spot is the area in the field of vision of each eye where there are no sensory cells that can receive light. This is a naturally occurring defect in the visual field (scotoma) – i.e. an area in which we are blind. Structure of the blind spot Anatomically, the blind spot corresponds … Blind spot
What tests are available for the blind spot? The blind spot is usually not noticed in everyday life due to a compensatory reaction of the body. However, it can be made visible by a simple test. To do this, an X and an O are written on a white sheet of paper at a distance … What tests are available for the blind spot? | Blind spot
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
