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People with presbyopia, or eyestrain, can also use contact lenses.

Presbyopia, also known as "eyestrain" is not a refractive error like myopia, nor is it an eye disease. The simple fact is that as of a certain age, the ciliary muscle, like other eye structures, loses elasticity and becomes less potent over time.

Contact lens users who up until now have been able to see properly at all distances begin to have difficulty reading as of the age of 40 to 45 years. It is important to know that the onset of eyestrain does not mean you have to give up contact lenses.
There are soft and liquid ones, with different designs and potency, so that, at OPTICA SALAS, the optometrist optician can prescribe the ones best suited to the sight and lifestyle of each person.

These lenses are placed in the near and distance correction areas in front of the pupil and let the brain select the right image according to the distance from the object we are looking at.
The way that progressive contact lenses, also called multifocal lenses, work, will depend on the design of each lens:

- Lens with alternating design vision have two power segments. The eye looks through one segment or the other depending on whether you want to look from a distance or near.
- Simultaneous vision design lens: they require the eye to look through the two powers at once. In this way, the visual system learns how to select the right power at all times, depending on whether we want to see from near or a distance.

The designs of contact lenses for eyestrain have made gigantic leap in recent years, incorporating the latest advances in design and materials.
People who are using contact lenses and now have eyestrain can benefit from the advantages of multifocal lenses.

We must always keep in mind that in order to use contact lenses properly, multifocal or not, our lacrimal system and cornea must be in optimal condition, with normal blinking levels, to facilitate adaptation and enjoy the comfort of contact lenses.

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