Sometimes there are cases when objects and images are not clearly visible, no matter where they are. It becomes difficult to make out the numbers 3,6,8 or 9. It is possible that bright halos and flashes around the lanterns may periodically appear . This can lead to difficulties driving in the evening, because. all colors at dusk become not so bright. The presence of one or more of these signs is a reason to seek advice from an ophthalmologist or an optician, because. one of the causes of such symptoms may be astigmatism.
What is astigmatism
Astigmatism is a condition in which the optical system of the eye is not spherical, and the rays passing through it are not focused at one point. This happens, for example, if the cornea is not quite the right shape.
As a result, a person at any distance does not see objects very clearly, or he needs time and some effort to focus his eyes and “sharpen”.
With prolonged work at the monitor and other visual loads, a person may not pay attention to the “image quality”, but headache, fatigue, a desire to close one’s eyes or rub one’s eyes with one’s hands can quickly join. These common symptoms can accompany a person for years, and, oddly enough, a simple trip to the optician can help get rid of them.
What to do
What to do if astigmatism was detected at the appointment with a specialist? It is quite possible to compensate for the shortcomings of the optical system of the eye by choosing the right correction. And in this case, the new Biotrue ® ONEday toric contact lenses can come to the rescue. for astigmatism *. Unlike glasses, contact lenses for astigmatism do not require getting used and adapted.
How lenses work
With Biotrue ® ONEday lenses for astigmatism correction, a person gets the opportunity to see a clear and clear picture. This is due to the stable position of the astigmatic lens on the eye surface, which provides a periballast design. The periballast is the “weight” that helps the contact lens to stay in the correct position at all times. The periballast is intentionally moved a little closer to the center of the lens, to the zone of the middle periphery, so that the edge of the SCL remains thin and soft.
When blinking, the eyelids glide comfortably over the surface of the eye and smoothly transition to the surface of the lens. This contributes to comfortable blinking, additionally helps to improve image quality and stabilize the lens at the expense of the eyelids.
Why do I need it
Properly selected astigmatism correction makes it easier to perform work tasks, increase contrast and clarity of the image. Without a full correction of astigmatism, it is impossible to improve stereo vision , which helps us make a three-dimensional picture of the world around us. That is why we need maximum visual acuity for each eye, especially in low light conditions and when driving at night.