Optomap imaging offers so much more than a retinal camera can provide. The advantages of its imaging would be beneficial to all as it simply reveals more detail of more of the retina than anyone has ever been able to see before. 

An optomap image provides more clinical information to facilitate the early detection, management and effective treatment of disorders and diseases seen in the retina such as retinal detachments and tears, glaucoma, diabetic retinopathy and age-related macular degeneration.

We are pleased to offer the benefits of ultra wide field retinal examination to all our patients. Our current Optos Daytona instrument is located in our Lydney location. 


OCT (Ocular Coherence Tomography) An OCT instrument allows us to see the structure of tissue underneath the surface at the back of the eye. A computer then builds a model of the eye and produces a three dimensional image that can be manipulated on screen. The increased imagery of the eye’s structure allows us to see things previously unseen and provides a much more in-depth examination. It is also very useful in identifying changes over time as all previous images are stored to compare at each new examination. We have found OCT scanning to be extremely useful in the following situations:

  • Early detection of glaucoma or monitoring its progress
  • Screening diabetic retinopathy
  • Age related macular degeneration, both "Wet" and "Dry"
  • Tension between the vitreous gel and retina
  • Retinal detachments
  • Macular holes

OCT is available to all our patients, but we specifically recommend it for those over 60 years of age or where there is a family history of eye problems

Visual field screening instruments are used to test the integrity of the “visual pathway” i.e. the journey taken by impulses from the eye through to the brain. This is achieved by flashing lights of varied intensity across an area of vision to measure how sensitive the eyes are. This instrument is frequently used to identify changes caused by glaucoma but can also identify others areas of compromised function within the visual system.


Colorimetery is a process used for those who suffer visual stress, particularly when reading. The test involves changing the background colour of a page to see if printing becomes easier and more relaxing to read.

A colorimeter is a device that changes the background colour by the use of coloured lighting. It can produce any colour of the rainbow and any shade of colour in between.

We have found this device to help some diagnosed with dyslexia or other forms of reading difficulties and even migraine sufferers can find it beneficial.


A Tonometer is a device that measures pressure. In optometry we can use several different tonometers with the aim of recording the level of pressure within the eye. It is important that the eye maintains a level of pressure, but this must not be too high or damage will be caused to the nerve fibres of the retina.


  • Pulsair - this type of tonometer uses air to push on the eye for a fraction of a second. This technique does cause the eye to blink but it does not touch the eye.
  • Goldmann and Perkins - these two devices work in the same way measuring pressure by pressing onto the eye. A local anaesthetic eye drop is necessary to prevent discomfort. The Goldmann device is fixed to a table top mounted magnifier called a slit lamp and the Perkins is a handheld version .
  • Tonopen - Much like the Goldmann and Perkins a Tonopen lightly touches the eye but only over a very small area. Once more an anaesthetic is used to prevent any discomfort.

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