Synonyms in a broader sense Glasses, lenses, sunglasses Intended use for sunglasses Protection from light: Sunglasses and sunglasses with vision are used in everyday life, especially in sunny weather and in summer, to protect the eye from UV radiation and also to reduce the amount of light rays entering the eye. Second is usually leading, … Sunglasses with prescription
Synonyms in a broader sense Glasses, lenses, sunglasses Forms To find out which sunglasses are right for you, the following things should be considered: The filtering of the light is directly related to the tint of the lenses. The stronger the tint of the lenses, the less light will pass through the sunglasses and thus … Which sunglasses suit me?
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
Synonyms in a broader sense Glasses, lenses, sunglasses Definition A pair of sunglasses is a pair of glasses with darkened, tinted lenses or lenses that alternately adapt to external light conditions. The production of the actual spectacle frame does not differ from that of normal vision spectacles. The only difference is in the manufacture of … Sunglasses
History The precursors of today’s sunglasses have been around for a very long time. Already in ancient Rome, there are said to have been ways of protecting the eyes from too much light. In those days, very thinly cut stone slabs were used, which were held in front of the eye and thus guaranteed the … History | Sunglasses
Meaning Hardly any other word is used so often by opticians, but hardly anyone knows exactly what the term means. Dioptre is a unit of measurement used to indicate the strength with which a lens refracts light. Dioptre is therefore also an indicator of the degree of ametropia, since the power of the glasses takes … Diopter