The structure of your eyes
In the last blog we talked about how we determine the correct lenses that you need to give you the best, most comfortable, vision. Here’s what we do next.
We always look very carefully at all the layers of the eye, from the cornea at the front right through to the choroid behind the retina at the back, we look for signs of disease or deterioration and also for signs of other more general conditions that can affect not only your eyes but the rest of your body as well. If all is well then we can safely go on to dispense your spectacles or contact lenses. If there is something that needs specialist help then we know where to send you to get the best attention as quickly as our health service will allow.
We have a number of instruments to help us look closely at the inside of your eye. Traditionally we have used an ophthalmoscope, which is a sort of torch with lenses to help us focus inside your eye. More recently this has been supplemented, and sometimes replaced, with a bio-microscope. This is a binocular magnifier with a chin rest to make it easy to keep your head still, often used with a supplementary lens held between your eye and ours. Both these instruments give a live view and the only record remaining after you’ve gone home is our notes of what we have seen.
Since 2001 we have been taking digital photographs of the back of our patients’ eyes and in 2007 we upgraded to an OCT scanner which not only records a digital (two-dimensional) image magnified about a hundred times but also builds up a three-dimensional model of the central part of the retina magnified up to two hundred thousand times.
In the next blog we’ll write about what we are looking for.