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Showing posts with label evidence-based. Show all posts
Showing posts with label evidence-based. Show all posts

Thursday, 19 January 2017

Permanent correction of vision, removing the need for spectacles or contact lenses. (22)

What do we want from our vision ?

1. We want to open our eyes each morning and see clearly, at all distances, without spectacles or contact lenses
2. We want to walk around without spectacles or contact lenses.
3. We want to drive without spectacles or contact lenses.
4. We want to read without spectacles or contact lenses.

So the goal is for everyone to see everything clearly at all times and at all distances, without assistance from spectacles or contact lenses.

These days we have lenses that can be implanted permanently into the eye to correct the focus, so that you no longer need spectacles or contact lenses.


The lenses we have available today, for implanting into the eye, are far better than those available even a few years ago. Your lens can be chosen from any of a variety of lenses; for the information on the latest lenses available, please feel free to contact the St. Albans Eye and Vision Clinic on:
Tel: +44 (0)1727 812925
Email: contact@StAlbansMedicalCentre.com
www.StAlbansMedicalCentre.com

The operation is painless and highly effective. It safely and permanently removes the need for spectacles or contact lenses.

So we can now bring near-perfect vision without spectacles or contact lenses, to almost anyone regardless of age or spectacle-prescription.

How does this work ? - read on:

The normal eye that needs no spectacles or contact lenses:

So, in the normal eye, the rays of light from each point on the object being viewed converge to a single point on the retina which is the layer lining the back of the eye which detects the image.

The rays of light from different parts of the object are focussed to different points on the retina so that an image of the object is produced on the retina. In fact the image on the retina is upside down and back to front;
however, because the brain has all our lives "seen" objects upside down and back to front, it appears normal to us and we are able to use the image to interact accurately with our surroundings.

The most common cause of blurred vision is focussing error (= "Refractive error"):

Short-sight:

When people are said to be "short-sighted" (= Myopia) this is almost always because the eye is longer than normal so that the focus of light from objects is in front of the retina so that rays of light from each point on the object are spread over the retina in a "blur circle" which means that the image is blurred:



Long-sight:

When people are said to be "long-sighted" (=Hypermetropia = Hyperopia) this is almost always because the eye is shorter than normal so that the focus of light from objects is (theoretically) behind the retina. This means that, once again, rays of light from each point on the object are spread over the retina in a "blur circle" which means that the image is blurred:



Astigmatism:

Sometimes the focussing problem is not simple myopia or hypermetropia, but rather the transparent window on the front of the eye (the "cornea") is rugby ball shaped instead of the more normal spherical football shape. This is called Astigmatism, and it causes rays of light in different meridia of the image to be focussed at different distances:


Presbyopia (= age-related requirement for reading spectacles):

Even if our vision is clear when young, as we move towards middle-age the natural lens loses its elasticity and the eye becomes unable to see near things clearly without reading spectacles. This is called presbyopia.

Correcting the above refractive errors with spectacles:

All of the above refractive errors (myopia, hypermetropia, astigmatism and presbyopia) can be corrected with spectacles or contact lenses. These work by altering the directions of rays of light before they enter the eye, so that after the incorrect focussing mechanism of the eye has finished acting on the light, the rays of light are focussed correctly on the retina.

But, as discussed in the post two days ago, both spectacles and contact lenses cause certain problems and are therefore not ideal.

Lens implants:

The ideal situation is for everyone to see everything clearly at all times and at all distances, from the moment they wake each morning until last thing at night, without assistance from spectacles or contact lenses. The goal is a one-off treatment that will restore spectacle-free near and distance vision for the rest of a person's life.

And we can achieve this by implanting the lens/contact lens into the eye so it stays there permanently.

The operation has been refined over the last twenty years, and at the St Albans Eye and Vision Clinic, U.K. (tel: +44 (0)1727 812925, Email: contact@StAlbansMedicalCentre.com) is undertaken absolutely painlessly in a few minutes, under injection-free local anaesthetic.

Modern lens implants can correct for all the above refractive errors: Myopia, Hypermetropia, Astigmatism, Presbyopia.
Truly back to the vision of a young person, spectacle-free.





Friday, 6 January 2017

The need for evidence-based information - ESSENTIAL (9)

These days we have information overload. The internet, and the media in general, are full of it.

In particular, there's no shortage of health advice, what supplements to take, what foods to eat, what not to eat etc. etc.

But how much of it is true ?! What is the point of information that is not based on hard evidence ? It's easy for writers to write, and for people to follow, but it's false - if you follow advice based on no evidence, you're wasting your focus, your time and your hard-earned money.

What we badly need is evidence-based information, so we can adjust our behaviour, diet etc., confident that we're actually achieving the results we seek.

But it needs an expert to assess the evidence, someone who can sift out the 99% hearsay rubbish and bring you the 1% evidence-based hard facts. And we need to see the references to the research or other evidence that proves the effectiveness of whatever is presented.

And that's where this web page comes in. We'll focus (please excuse the pun) on eyes and vision, and bring you the facts with no hype, no hearsay,  no myth, free from commercial hard sell.

So you can adjust your lifestyle, eat the correct things, take the correct medications/supplements, do the correct exercises, seek out the correct operations/other treatments, and so on - and you can be confident that you're actually doing the things that will work for you.

So enter your email address at the top of this page, so we can send you our first published report - a concise account of the vitamins and foods PROVEN to reduce the incidence and progression of Age-related Macular Degeneration (the commonest cause of blindness in developed countries), complete with references to the research evidence underpinning the summary. Essential information for everyone - we're all living longer - we desperately NEED our vision to last.

To your lifetime of good vision.

The Eye Care and Vision team,
St. Albans Medical Centre
UK

Tuesday, 3 January 2017

A new source of reliable, evidence-based information on how to look after your eyes and vision so they can last your lifetime. (6)

This is the latest version of the new and updated blog from the Eye Care and Vision department of St. Albans Medical Centre, St. Albans, UK.


We post here only proven information, with references to the supporting evidence, so that you can rely on it when choosing how to care for your eyes and vision. Actually PROVEN information is relatively scarce, so we don't post often - but what we do post is proven fact that you can rely on to look after your eyes and your vision for life.


Your vision is arguably your most important asset. Most people would prefer to lose anything rather than lose their eyesight.


We are living longer, so it is important to do the things that we know prolong the life of our eyes and our vision.


This is the stuff we teach our patients every day - we want you to benefit too!


ENTER YOUR NAME AND EMAIL ADDRESS above for our regular FREE posts and emails, with all the authoritative supporting evidence, each time we present a reliable proven fact concerning how to care for your eyes and vision. Stay informed - you owe it to your eyes, to your family, and to yourself.