Contact Lenses

CLs for over 40s

From mid-forties and on, everyone's vision changes as the eyes' focus become less flexible.  The process is called presbyopia, and the outward sign of it is people holding books further away, reaching for reading glasses, getting bifocals etc.  So what contact lens options are available for the 40s-plus age group?

There have been quite a few ways devised for contact lenses to achieve both distance and near focus.  Each method has its own features and limitations, and what will work best for you depends not only on your eye health and optical prescription but also on your visual needs and expectations.  Most methods require some adaptation time.  

 

Presbyopic contact lens options include

 

Multifocal contact lenses vary in strength across the lens.  Unlike bifocal or progressive spectacle lenses which vary in strength depending on where you move your eyes to look through,  multifocal lenses supply light at different focusses to your eye, and your eyes and brain sort out which focus distance to concentrate on.  

Monovision relies on wearing a contact lens that is clear for long distance in your dominant eye, and a contact lens clear for near work in your other eye.  It may sound a little strange at first, but this method works successfully in many people.  

Combinations of contact lenses and spectacles are often used to help out near work, especially if reading correction is only needed occasionally.  'Over-readers' can also be used to top-up the focus for fine tasks for wearers of multifocal contacts.  

There are lots of different type and combinations possible; so if you're at the age where you need assistance for reading, come in to Sharpe and Fowler and find out what contact lens options can work for you.  

Eye Health Facts

Ever wondered why cutting onions makes you cry?

As you slice an onion, the onion cells release a gas into the air.  When this gas contacts the eye, it turns into weak sulphuric acid in the moist tear layer that coats the eye.  Nerve endings in the cornea react to the acid, causing the sting, and trigger the lacrimal (tear) glands to produce lots of tears in an attempt to further dilute and flush away the acid. 

If onions are in water, or near running water when cut, there will be much less gas in the air, and you are less likely to start crying.

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