Posts Tagged ‘presbyopia’

Progressive Progress!

Sunday, July 19th, 2009

Within the portfolio of lenses available to optical consumers, varifocals – also known as progressives, or three-in-one lenses – are the one most queried, feared and maligned! So let’s take a look at this incredibly useful and technologically advanced lens type, and hopefully destroy a few myths…

If you’ve got no idea what a varifocal is, a quick summary - a clever lens that does what your eyes did before presbyopia developed. At that certain age – usually around the forties – our eyes stop allowing us to focus on detail close too. Then the computer screen gets difficult. A progressive lens let you focus close up, at arms length, and in the far distance, in a lens with no visible lines.

Many people know someone who wore these lenses in the past and didn’t get on with them. As the first varifocal was developed in 1959, clearly technology has moved a little since then! Lens designs have dramatically altered since their first introduction, and all varifocals are now easy to wear.

The other story you may hear is that they take forever to get used too. In the past, this was certainly an issue. Some patients felt sea sick, others got terrible headaches, but thankfully this is now a thing of the past. You may feel a little odd for a day or two, but these problems are usually short lived and do not affect the majority of wearers.

As more and more of us use computers on a daily basis, and the ageing population stays fitter and healthier for a long life span, varifocals are the only option that allow you to do everything you want to do in a single pair of glasses. If ordering from an online optician make sure you can return them if there are problems, and then you have a safeguard – in the unlikely event that you’ll need it.

Get Three-for-One

Monday, May 18th, 2009

We often mention varifocals, blithely throwing them into the conversation as if you’re all as geeky and glasses obsessed as us. We do realise though that some of have more of a life than us, and may not spend your time getting excited over new lenses and coatings. So – back to basics – what is a varifocal? What does it do? Do you need one?

You may already know that even if you don’t wear glasses when you’re young, everybody needs them for reading at some stage, usually when they reach their mid-forties.  (See our notes on presbyopia) A varifocal lens – also called a multifocal, or PAL, or progressive lens, gives you back the sight you had when you were younger.

The lens looks like any single vision lens – get some Grecian 2000 on your hair too and swear blind you’re only thirty – so nobody need know that you’re wearing them. Within the lens however there are different powers, to help you see close too, at arm’s length, and for far distance. The lens has the three prescriptions you need all in one, blended together to make things easy and comfortable

It’s better for you to get into varifocals as soon as you need help for reading, they are easier to adapt to when your reading prescription is lower. As so many of us are chained to our computer nowadays and all you baby boomers have such busy, active lives, varifocals are really the only solution if you want to everything without having to carry endless pairs of specs around – three-into-one will go!

The Facts about Presbyopia

Sunday, May 17th, 2009

We’re all aware of visible signs of ageing – a sprinkling of grey hair, a few lines that show we enjoy life and laughing. There is however one sign of time passing that many of us do not understand. We’re talking about the visual problem Presbyopia, an unavoidable change in your sight that occurs after the age of forty. Let’s give you some facts, explanation and options to help you to deal with it.

Presbyopia usually becomes noticeable around the age of forty, although some people don’t have a problem until their early fifties. You’ll notice:

  • Having to hold things further away to see them – handwritten items, sewing, newspapers.
  • Finding it hard to read in poor light conditions, such as a restaurant menu at night.
  • Headaches or tired eyes after reading for long periods.
  • Difficulty seeing small detail or print.

Presbyopia occurs due to ageing of the lens inside your eye. From birth onwards this lens changes shape to let you focus at any distance. As time goes on flexibility decreases and the lens does not allow you to see close too any more. You’ll now need a prescription lens for reading and fine detail. It happens to everyone in time, and while you can’t prevent it, you can make wise choices to make life easier. So what are your options?

If you don’t have a distance prescription then reading glasses are a simple and cheap solution. They give a wide field of view, and you just pop them on when you need them. If you have a complicated prescription an Optician will make them, or you may be able to buy ready made glasses. If you decide on ready readers, get the correct power – ask your Optician what you need.

If you want to do more than one thing at once, such as read and look at TV, then you’ll need glasses that let you see both far and near. Varifocal lenses have three powers within the lens – distance, middle distance and reading. This restores your natural vision, letting you focus on everything with a smooth transition between all areas of the lens. They look just like single vision lenses – no one will guess your age!

Bifocals just have a reading and distance prescription. They can cause problems because they don’t have the middle distance section, so cannot be used at the computer, and you can’t see the dashboard when driving. The reading segment is also visible to people looking at you.

There are contact lens options too. Multifocal contact lenses give the same effect as Varifocal specs. Or you can wear distance contacts with reading specs over the top. The other option is called monovision, a compromise where you wear a lens in one eye that corrects your distance vision, and a reading lens in the other. Sounds odd but your brain does the job for you! It works well for suitable patients.

We hope that we’ve given you some useful information about Presbyopia, to help you make the right eyewear choices when the time comes. Think about what you do on a daily basis, and make a decision based on your lifestyle.