A brief summary of the machines follows below:
- The Sirius Corneal Topographer
This device maps the anatomy of the front of the eye. It measures the shape of the cornea and looks for abnormal shapes or contours. It can analyse both the front surface and also the back surface of the cornea. It can also analyse the shape of the interior of the front of the eye for those patients who might need an implant inside their eye to correct their vision.
This device measures how the eye handles light. It tracks 256 separate laser beams through the eye and sees where they pass. It then analyses the optical quality of the eye and gives very valuable information for surgical planning and assessing the success of the outcome.
Optical Coherence Tomography (OCT) is a device that allows us to examine the retina and the cornea in very considerable detail. It yields very valuable information regarding the morphology of these tissues. With it we can see the rods and cones of the retina and assess their health. We can also analyse the anatomy of the optic nerve and make sure it is healthy.
This is a device that maps the contours of the cornea. It gives valuable information in cases where there is a complicated spectacle prescription. In Presbyond surgery data from this machine is fed electronically into the laser as part of the surgical planning.
The technology is similar to OCT and it measures the length of the eye from the front of the cornea to the very back of the retina. It also measures other distances within the eye and gives information about the refracting power of the cornea.
This is the examination that carefully measures exactly what spectacle prescription will put your eye into the best focus. It is essentially the same as a detailed spectacle examination with a good optician. In some patients we also have to put drops into the eye to paralyse the focusing muscles for a short while. This allows more precise measurement in those cases. This is the measurement that is used to calculate the exact treatment and as you can imagine is very important. It is more precise than for ordinary glasses or contact lenses.