Synonyms retinal tumor What is a retinoblastoma? A retinoblastoma is a tumor of the retina (at the back of the eye). This tumor is genetic, i.e. hereditary. It usually occurs in childhood and is malignant. How common is retinoblastoma? Retinoblastoma is a congenital tumor or it develops in early childhood. It is the most common … Retinoblastoma
How is a retinoblastoma inherited? There are two different types of retinoblastoma. On the one hand the sporadic (occasionally occurring) retinoblastoma, which occurs in 40% of cases. This leads to different changes (mutations) in the affected gene and finally to the formation of a retinoblastoma. This usually occurs only on one side and is not … How is a retinoblastoma inherited? | Retinoblastoma
Definition It is estimated that one in ten children in Germany cannot see properly. It is important for the child to learn to see correctly and for its development that both eyes function properly. An uncorrected visual impairment can have serious consequences for eye and brain development. But it is also important for social life … Recognizing visual impairment in children – can my child see correctly?
Associated symptoms Symptoms that occur together with vision problems are often caused by the child’s desire to compensate for the defective vision. For example, tension can be caused by keeping the head tilted or headaches can occur due to increased effort in seeing. Older children of kindergarten and elementary school age often have additional problems … Associated symptoms | Recognizing visual impairment in children – can my child see correctly?
What can I do myself? It is important to have your eyes checked at an early stage if there is a suspicion of poor vision. Indications of this are if the child stumbles frequently, reaches past objects or holds the picture book very close to the face. Even small things that make parents suspicious should … What can I do myself? | Recognizing visual impairment in children – can my child see correctly?
Synonyms Red eye in the broadest sense: conjunctivitis, conjunctivitis Definition reddened eyes Red eyes is the leading symptom of conjunctivitis. However, the red eye can also occur in many other eye diseases. The conjunctiva is the primarily affected structure of the eye. It usually appears whitish. Red eyes rarely occur as the sole symptom. In … Red eyes
Therapy Long-sightedness There are now several treatment options for the correction of farsightedness. The oldest solution is glasses. Later contact lenses were developed. Basically, contact lenses are small elastic lenses that are placed on the cornea. The advantage is that you do not immediately see that you are wearing glasses (cosmetic effect) and when doing … Therapy Long-sightedness | Long-sightedness
Synonyms in a broader sense Hyperopia, hyperopia, hypermetropia, presbyopia, hyperopia, astigmatism, nearsightedness Definition In farsightedness (hyperopia) there is an imbalance between the refractive power and the length of the eyeball. Long-sighted people see well at a distance, but objects appear blurred at close range. The eyeball is too short in relation to the refractive power … Long-sightedness
SymptomsComplaints The simplest sign of farsightedness is a blurred or blurred image of nearby objects. In small children, strabismus often occurs due to the nervous coupling of accommodation and convergent movement of the eye (the fixation of a point with both eyes). Strabismus occurs, strabismus (esotropia). Other symptoms that can be caused by the constantly … SymptomsComplaints | Long-sightedness
Definition The visual acuity of the eyes is tested with an eye test. This indicates the resolving power of the eye, i.e. the ability of the retina to recognize two points as separate. The visual acuity defined as normal is at a visual acuity of 1.0 (100 percent). Adolescents often achieve even better visual acuity … Eye test
2. shihara color plates In 1917, this method with test images of different colored dots that form a complete picture was developed by the Japanese ophthalmologist Shinobu Ishihara. The test is based on the fact that “normal sighted people” can recognize different motifs by differentiating between red and green on the test images than people … 2. shihara color plates | Eye test
Definition The refractive power of the eye is measured in the value diopter, which is abbreviated as dpt. The value of the refractive power indicates how far behind the lens the light is bundled and thus the image in the eye is brought into focus. From this it follows that dioptre is the reciprocal of … Diopters – Values