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FAQs

Answered by Opticians Dr Brendan McCreesh and Alison Brand

What’s the difference between Bifocals and Varifocals?

Bifocals and Varifocals are often used when the wearer needs two pairs of glasses (i.e. one for distance and the other for reading) but prefers to have the two prescriptions combined in the one pair of glasses.  People who wear spectacles full time often wear bifocals, where there is a segment in their glasses, which they look through for near tasks, e.g. reading, using a computer etc.  Varifocals are another option where the power, and hence the distance to which the glasses focus, changes progressively as the person looks through different positions on the lens.  Unlike bifocals, there is no visible dividing line between prescription powers.

Should I buy over the counter reading glasses?

Costing as little as £5, it is easy to see the appeal of over-the-counter reading glasses aka ‘ready readers’ which you can purchase on the high street or internet without the need for a sight test. However, there are a number of disadvantages to bear in mind when thinking of purchasing these. For example, they use the same strength in each lens (e.g. +2), which is very unlikely since most people require a different lens power for each eye. Also ready readers are mass-produced and many have flaws and distortions in their lenses, causing eyestrain, headaches and fatigue. In addition, they won’t fit as well as glasses that have been measured and fitted specifically for your face by a professional. At McBride and McCreesh Opticians, we feel it is essential to have your eyes examined before buying glasses. As well as ensuring the correct prescription, we will also check for conditions such as diabetes and glaucoma, which can cause blindness.

How often do I need an eye test?

At McBride and McCreesh Opticians, we recommend that you have an eye test at least every two years or asFAQ-eye-test-mcbride-mccreesh-opticians recommended by your optician.  However if there is a family history of glaucoma, if you have diabetes, or some other ocular condition your optician will often recommend a check more frequently. During an eye examination at McBride and McCreesh Opticians, the optician will investigate what prescription exists, if any, check the health of the eyes and will ensure that both eyes are functioning properly.  The optician will also evaluate the eyes as an indicator of your overall health.  Interestingly to note; opticians are often the first medical professionals to detect conditions such as high blood pressure and diabetes.

I see black spots in front of my eyes. What are they?

The black spots you are referring to are most likely to be floaters in the vitreous gel that make up the main part of your eye.  They are very common, and generally nothing to worry about.  floaters-faq-mcbride-mccreesh-opticiansHowever, sometimes floaters can arise from the retina, which can indicate an area for concern.  To make sure, we always recommend that patients with sudden onset floaters come for an eye test at the practice where the retina will be checked thoroughly.

Will my cataract come back after my cataract surgery?

Occasionally a small minority of people notice that their vision becomes cloudy or misty again in the eye where the cataract has been removed. Do not worry, this is not the cataract returning, but is due to the capsule containing the replacement lens clouding up. The cloudiness can be removed by a painless laser treatment in a matter of minutes. Contact McBride and McCreesh Opticians today, if you are worried that this is happening to you on 028 66 322524.

Will I need new glasses after my cataract operation?

Most people find that their glasses prescription needs updating after their operation. If you feel your prescription needs updating, contact McBride and McCreesh Opticians for an eye examination a few weeks after your surgery.
You may also find that it takes a few weeks to adapt to your vision with new glasses after cataract surgery. This is completely normal, and is due to your brain adapting to a different prescription.

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