Vision Express is best known for providing outstanding eye test facilities in the UK and Ireland. With over 240 locations and expert staff capable of carrying out eye tests in more than 100 different ways.
Visual Acuity is the test of one’s ability to see and focus on an image from a certain distance. The commonly used terms 20/20 and 6/6 are also derived from the same phenomena. For instance if a person is capable of sighting an object from a 20 ft distance, and the same can be seen by a person with perfect vision from 20 ft then one has a 20/20 vision. Whereas if a person is capable of seeing something from a distance of 20 ft which can normally be sighted from 40 ft then one has a 20/40 vision.
This test helps determine refractive condition of one’s eyes. The examination is carried out by using a retinoscope to shine light into the patient’s eye and observing the resulting reflection off patient’s retina. The examiner also moves the light source to observe the relative movement of one’s reflex.
It involves entering light into a person’s eye and precisely calculating an objective measurement of a person’s refractive error which helps determine prescription for glasses or contact lenses.
The opthalmoscope is an instrument used to determine the health of the retina. This test also helps determine if a patient has diabetes or related nerve problems.
In this procedure the patient is tested for fluid pressure inside the eye. This test also provides valuable insight on one's ocular conditions.
By checking the visual field opticians determine the spatial array of visual sensations and if there are any associated diseases which may cause loss of vision or reduction in sensitivity.
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Advice should always be sought from your local GP,Pharmacist, Optician or Ophthalmic Medical Provider as appropriate.