Soft and hard contact lenses
Contact lenses are divided into two categories, soft and hard lenses. The stable lenses are used depending on the product, twelve to 24 hours and have a more complex care required as a soft adhesive peel. These are available in different life stages, which differ in the daily disposable, monthly and annual lens. Although both versions are now suitable for each prescription, but decreases with the hard lens, the risk of drying and the resulting discomfort of adhering to the eye lens. The rigid contact lens floats on the film of the natural tear fluid and thus not affect the nutrient supply in the eye.
However, they are unlike soft lenses more susceptible to dirt particles. Soft shells detention promise a better comfort and the eye adjusts more quickly to the helpful foreign body. Soft lenses are usually larger and adapt to its flexibility of corneal shape. You should decide your owns, what type of lens is ultimately preferred.
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Many people wear contact lenses, the more they can live without glasses. Choosing the right lenses should be discussed with the ophthalmologist.
Glasses are among the losers in the aesthetic life. As early as kindergarten and school they are ridiculed as cobra and as an adult, they are always acting intellectually outsiders of society. But especially in the everyday people with “four eyes” are seriously disadvantaged. When cold fog the glasses and when it’s stormy and snowy outside, is completely lost sight of by and at a romantic rendez-vous with the partner is the one eye irritant.
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Keratoconus is a corneal disease of the eyes, which at present can be treated with four options.
Once the cornea is curved taper outwardly and always thinner, doctors speak of keratoconus. The result is mild to severe nearsightedness.
Often issued by the eye disease as a side of atopic disease, Down syndrome or connective tissue diseases. All recent evidence suggests a hereditary disease.
If this type of corneal deformation observed, mostly between 15 and 30 Age, demand characteristics of different strength fast action. First, it can occur only in phase 1 and also spend some for a lifetime, on the other hand, she strides forward in other patients rapidly and quickly reaches a low vision of 55 diopters, and more.
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Glaucoma refers to a death of nerve cells in the retina. Thus, the net fibers also reduce.
Glaucoma is a leading cause of blindness in developed countries. In Europe and the USA about two percent of the 40-year-olds are suffering from glaucoma. In most countries, at least a tenth of the Glaucoma sufferer go blind, because the disease is not diagnosed. From all blindness worldwide is about 15 percent of glaucoma are attributed.
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As astigmatism is known in ophthalmology a curvature of the cornea that causes vision impairment.
The light rays that consideration of the picture go out and fall through the lens into the eye may not be as usual bundled into a point on the retina. Instead, the beams are very distorted, which means a single point more than clear picture, but only as a blurred line (rod) to be exercised. This most common form of astigmatism is also referred to as regular astigmatism. If the irregular astigmatism is an irregular curvature of the cornea, so it has more curves, almost like a hilly landscape. This creates a real mess in the image on the retina, which can detect the person no longer sharp image. In a healthy eye the cornea is curved even, in itself, but evenly matched, so that light can be broken by the side of right.
Continue reading “Astigmatism: Causes and Treatment measures”