If you have done any reading about vision correction in the 45 + age group, you will realize that are two components to refractive vision problems in this age group. Firstly there is the refractive error itself, whether that be long sighted, short sighted or astigmatism, and secondly, there is the issue of presbyopia. As I have pointed out in other parts of this site, vision correction ONLY addresses the former. That means that the refractive error will be taken out of the equation, leaving you with the fact that beyond forty, your lens can no longer focus.

That means that reading glasses will be needed to perform near tasks. Also note that some people choose to be left DELIBERATELY short sighted to enable them to read without glasses but that means the they will need distance glasses.

If you want to have your cake and it it too, that is no glasses, well then a strategy such as monovision is required. Note that there are other options available which are discussed also on this site.

Monovision is one of a number of techniques used to attempt to get around the problem of presbyopia

Dealing with presbyopia with monovision involves adjusting the dominant eye to see distance and the non dominant eye to see up close.

Whilst this sounds bizarre, it actually works very well and is often practiced by contact lens wearers. Essentially whilst looking at something in the distance, your brain tunes in to the sharp image from the dominant eye and ignores the blurred one from the non dominant eye. The reverse is true when reading. Approximately 30% of people do not tolerate monovision, but, can become used to it if they persevere. It can however take several months to do so. Generally, hyperopes seem to do much better with it than do myopes.


There are numerous techniques used to determine eye dominance. One approach is to look through a camera eyepiece or aim a rifle.

Most people will tend to use their dominant eye.


Prior to any vision correction procedure, we will trial monovision with contact lenses, or ask your optometrist to do so.

This will guide us as to wether this approach will work for you.

If not, there are other approaches that can be considered.

See the page on Presbyopia correction options.


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