CONTACT LENSES FOR EYESTRAIN

From the age of 40, near vision fatigue begins. You begin to see slightly blurred the elements that are close to the nose at a distance of about 40 cm. This process is called presbyopia or eyestrain. It is a completely natural phenomenon as the muscular elasticity of the eyes is lost and it is very difficult to focus on objects that are very close to the eyes.

The crystalline lens is a structure inside the eyeball that focuses light coming from the outside onto the retina. When the lens is young, it is very flexible and is able to focus and defocus objects whenever it wants. As the years go by, the crystalline lens loses this ability to focus well on near objects because it loses flexibility and this causes blurred vision for close reading.

Presbyopia can be corrected with glasses or contact lenses.

TYPES OF PRESBYOPIA CONTACT LENSES

There are three options for contact lenses that correct presbyopia.

• Hydrogel: they can be daily or monthly. They can be used occasionally, for example, twice a week but If the idea is to wear contact lenses for presbyopia every day, such as at work, monthly lenses that last for a month are the best option. After wearing them, they should be stored in the liquid so that they can be used the next day. If the contact lenses are to be used for only a few days, for example, for sports or only for weekends, daily contact lenses are the best option.
• Silicone hydrogel: they can also be daily or monthly. They are soft like hydrogel contact lenses, but the material is slightly different. You should see a specialist to test the ideal material for your eyes.
• Rigid: These are conventional contact lenses. They are made of a hard plastic. They provide more oxygen to the eye, although they can be uncomfortable to wear.

Progressive contact lenses, i.e. for presbyopia, unlike progressive glasses, do not require adaptation time. They usually work with a dominance system, i.e. one eye is prioritized for distance vision and the other for near vision. With this system, with both eyes open, vision is good for both distance and near vision. It is necessary to go to a specialist optician, so that they can assess which material is suitable and with which one you will achieve the optimum vision for both distance and near vision. Keep in mind that it is difficult to achieve 100% distance vision and 100% near vision. Normally, depending on the work environment of each person, one option or the other is provided. If you work 8 hours in front of a screen and reviewing documents, it is best to prioritize near vision and achieve 100% near vision and maybe 80% far vision. If you are working outdoors and looking at distant distances and occasionally you have to look at an object up close or read close up, prioritizing distance vision is better. The moment you want to start wearing these contact lenses, you should go to the optician and start a contact lens study.

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