Lens Spectacle Bifocal

The Bifocal Spectacle Lens (L.o.b.) is an optical device that is used to correct vision in people suffering from presbyopia. L. o. b. consists of two lenses with different degrees of refraction, which are located at a certain distance from each other.

Presbyopia is a condition in which a person has difficulty reading or working at close distances, such as working on a computer or reading a book. This occurs because the eyeball has different refractive powers at different distances. L. o. b. allows you to correct this difference and provide clear vision at different distances.

L. o. Bifocal lenses are used to correct nearsightedness and farsightedness. They consist of two parts, each of which has its own degree of refraction. The first part is designed to correct myopia, and the second part is intended to correct farsightedness.

When choosing L. o. b. It is necessary to take into account not only the degree of refraction of each part of the lens, but also the distance between them. For example, if a person is nearsighted and farsighted, he or she may need a bifocal lens with a larger distance between the parts.

Use of L. o. b. can significantly improve the quality of vision and increase performance. However, like any other optical instrument, L. o. b. requires proper selection and use.

Lens for correcting myopia and farsightedness in combination. The advantages of these lenses are as follows: in the field of view a person sees objects up to a dioptric unit, which is important for older people, and they also allow the visual organs of the eye to periodically rest from tension. The bifocal lens is used for patients with mixed astigmatism or astigmatic curves.