How much power should contact lenses have

How much power should contact lenses have

Although contact lenses are a convenient alternative to glasses, switching from one way of correcting visual disturbances to another is not as easy as you might think. The power of the contact lenses needs to be carefully selected. However, it may differ from the power of the glasses we have worn so far. So how to choose the right lens power?
In order for contact lenses to provide proper visual acuity and to be comfortable and safe to wear, we should not choose them on our own. If you are going to buy your first contact lenses, first contact an ophthalmologist or optometrist. During the visit, the optometrist will correctly select contact lenses, taking into account the type of visual impairment we have, our lifestyle and our individual preferences. He or she will also determine the correct power of the contact lenses to ensure optimal visual acuity.
With these guidelines in mind, it is no wonder that the power of contact lenses is different from the power of the glasses we have worn up to now. We must bear in mind that contact lenses adhere directly to the cornea, while glasses are a few or several millimetres away from the cornea, which is the main reason for the discrepancy. Usually, people struggling with short-sightedness will need contact lenses with less power than glasses, while those with farsightedness will need more contact lenses.
Conversion tables – is it worth using them?
Interestingly, the Internet offers us access to conversion tables, which allow us to check the power difference between contact lenses and glasses (taking into account the specific distance between the glasses and the eye, usually 12 mm). However, this is information of an approximate nature and should not be treated equally to the indications of a specialist. Choosing the power of contact lenses based on them is not a good idea, especially since a number of different solutions are available on the market.

  • Prev Post
  • Next Post