Is my prescription the same for both specs and contact lenses?
No. A contact lens prescription is only 100% complete when the details of their fit are included. This means that although the powers may seem similar to your spectacle prescription, the powers alone are not sufficient when specifying a contact lens prescription. Additional parameters like lens type, diameter and base curve must also be included.
 
What does the eye exam involve?
An Eye Exam allows the Optometrist to:
  • Determine any relevant prescription for your eyes (far or Near-sighted, Astigmatism, Presbyopia)
  • Check that the muscles of the eyes work together
  • Check your Eye Health and screen for any associated general health problems
  • Perform any further testing as deemed necessary like Eye Pressures, Visual Fields, Color Vision or Pupil Dilation
 
Can my contact lenses get 'lost' behind my eyeball?
No, this can NEVER happen as the eyeball has a 'safety net' situated underneath both eyelids. This 'safety net' is a membrane called the conjunctiva. The conjunctiva is a continuous membrane enveloping the outer portion of the eyeball as well.
 
How difficult is it to adapt to multifocals?
The first time any spectacles are worn some adjustment time is required mainly because the new, clear vision needs to be accepted by your brain. Once it has learnt to recognize the images seen through the spectacles and become familiar with them, the initial “WOW” effect should have worn off. Multifocals are slightly trickier than single focal specs since they change in power as the eyes look from the top to the bottom of the lenses. Your eyes need to learn which parts of the lens to use when looking either close-up, far-away or in-between. Your Optometrist can advise you on tricks to help you get started and in no time you should be well on your way to successful multifocal wear. A few individuals may struggle with these type of lenses simply because they cannot tolerate the changes in power which is inherent in the design of these. We advise that a period of 4 weeks be allowed before deciding that multifocals are not for you.
 
I see black spots floating around in my vision especially when the sun is out - what are they?
These are called floaters. As the eye ages, more of these are seen and they are due to the changes in the vitreous jelly of the eye. The vitreous is simply a clear jelly that fills up the internal space of the eyeball between the lens and the retina. Changes may occur which cause the very fine fibrils contained in the jelly to clump together and become visible as floaters. As long as these are longstanding and not associated with any flashing lights, they are generally okay and all you would need to do is notify your Optometrist and keep a watchful eye on them. If however you have not seen them before and they have only recently appeared, a thorough check with your optometrist or better still, an ophthalmologist (eye doctor), is advised. Floaters are most easily seen against a white or bright background. This is why they are more visible in the sunshine, against white walls or whilst flying and looking out at the clouds. Sometimes floaters are an indication of retinal tears and possible detachment of the retina. Although this does not happen all that often it is wiser to be safe rather than sorry so if in doubt, please find out!
 
 
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Coatings Print E-mail

frame_matl_lazi_vestra.jpgScratch resistant coating: The plastic lens material is relatively soft and is easily scratched if it is not coated with scratch-resistant material. Even with scratch-resistant coating, your lenses will become scratched through normal use over time. The coating material is a much harder plastic compound that is applied to the lens, but it too can be scratched. Once scratched, a lens cannot be repaired or “buffed” free of the scratch. Scratch coating cannot be guaranteed; it is simply added protection from scratching, and it will inevitably scratch over time.

Ultraviolet protection (UV) Coating: The sun radiates ultraviolet waves, which are extremely damaging to the human eye and skin. Lenses with ultraviolet protection help prevent the harmful UV radiation from touching your eyes. Polycarbonate, high-index, photochromic, and polarized lenses all automatically contain UV protection.

Anti Reflective (AR) Coating: is an extremely thin layer of film that is deposited on either the front or the back surface of the sunglass lens that virtually eliminates reflections from the back of the lens. AR coating makes it easier for other people to see the wearer’s eyes, and it makes it easier for the wearer to see through the lens. AR coating is very useful for night driving and for people who look at computer screens. Lenses with AR coating must never be cleaned dry, as this can scratch the coating. The best cleaner is one that is made especially for AR-coated lenses. 

 
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