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
What is Chiasma Syndrome? Chiasma syndrome consists of three components and occurs when the intersection of the visual pathways along the midline is damaged. This results in a conduction disorder of the central parts of the retina and the field of vision of the outer sides of both eyes is no longer perceived. In addition, … What is Chiasma Syndrome? | Visual path
Introduction The visual pathway is a part of the brain, because all its components originate there, including the optic nerve. The visual pathway begins at the retina, whose ganglion cells are the starting point, and ends in the visual cortex in the cerebrum. Its complex structure enables us to see. Anatomy of the visual path … Visual path
Course of the visual path The visual pathway extends from the retina of the eye to various areas of the brain. The most distant area of the brain is located at the back wall of the skull and thus at the head on the opposite side of the eyes. The beginning of the visual path … Course of the visual path | Visual path
Insertion of the visual field The retinal sections reflect the visual fields in opposite arrangement. The right part of the visual field of each eye is recorded on the left side of the retina. The left halves of the visual fields are accordingly imaged on the right part of the retina.The right and left tractus … Insertion of the visual field | Visual path
Many people believe that glaucoma, also known as glaucoma, is associated with increased intraocular pressure. But this is a misconception: often the intraocular pressure is within the normal range – but the optic nerve is still at risk. Anyone who, as a result of this misconception, independently forgoes the prescribed antiglaucoma medication, i.e. the eye … Normal-pressure Glaucoma: Intraocular Pressure Normal: Optic Nerve Destroyed
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
General information The optic nerve (Nervus opticus, ancient Greek “belonging to the sight”) is the second cranial nerve and the first part of the visual pathway. It serves to transmit optical stimuli from the retina to the brain. For this reason it belongs to the nerves of sensory quality. It runs from the lamina cribrosa … Optic nerve
Clinic If an optic nerve is completely destroyed, the affected eye is blind. However, if only part of the fibers are destroyed, for example in the optic chiasm, i.e. the crossing of the fibers of the right and left eye, the patient suffers from heteronymous hemianopsia. This means that the nasal fibers of both eyes … Clinic | Optic nerve
Synonyms Lens oculi Introduction The lens is a part of the ocular apparatus, is located behind the pupil and, together with other structures, is responsible for the refraction of the incoming light beam. It is elastic and can be actively curved by muscles. This allows the refractive power to be adjusted to different requirements. With … Lens of the eye
