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
Estimation of the strength of a visual aid for If there is an age farsightedness, then there is a rule of thumb, which helps to the inaccurate estimate: The reciprocal value of the distance in meters, in which one would like to read its newspaper gladly becomes minus the reciprocal value of the distance in … Estimation of the strength of a visual aid for | Diopters – Values
An eye is farsighted if it has the visual defect of no longer being able to focus on nearby objects and thus to recognize them clearly. Farsightedness is a visual defect that is often caused by the fact that the eyeball is too short, so that the sharp image is only formed behind the retina. … Dioptres and farsightedness
Definition School of vision The term “school of vision” is used to describe facilities at clinics or in ophthalmological practices where orthoptists work together with ophthalmologists to treat eye movement disorders such as strabismus and eye tremor, impaired vision and all diseases affecting the eyes. Today, the term “school of vision” is rather outdated, since … School of vision
Neuritis nervi optici (Latin) Symptoms The main symptom of optic neuritis is a visual disturbance in which the decrease in visual acuity (loss of visual acuity) occurs suddenly. This deterioration in vision can occur particularly in multiple sclerosis as a result of a warming of the body, for example after strenuous physical activity, after a … Symptoms of optic neuritis
Diagnosis Usually glasses are prescribed by an ophthalmologist through a prescription. Either the optician or an optician then carries out an eye test with the patient. First, a purely geometric-optical measurement of the eyes is carried out. For this, the patient sees through a so-called autorefractometer. The result indicates whether glasses are required. This objective … Diagnosis | Glasses
Synonyms The name Brille comes from the late Middle High German word “berille”, which in turn is derived from the word “beryl”. These are the 1300 used cut semi-precious stones; rock crystals usually called beryl. As colloquial synonyms names like “nose bicycle” or “eyeglasses” are circulating. Definition Glasses are an aid for the correction of … Glasses
Synonyms in a broader sense Visual acuity, visual acuity Long-sightedness, short-sightedness, astigmatism, low vision General information The examination of visual acuity is usually carried out by an ophthalmologist, but also by non-medical personnel, such as opticians or orthoptists, or other medical personnel by means of an eye test. Visual acuity is always measured separately for … Visual acuity examination
What are diopters? Dioptre is the unit of measurement for the sharpness of vision. It is also abbreviated as dpt. It is a mathematical unit that represents the refractive power of light. It is used in ophthalmology, especially for the thickness of glasses. It can be used to differentiate between long-sightedness (positive diopters) and short-sightedness … What are diopters? | Visual acuity examination
