Spatial vision can be affected by changes in the optics of the eye or by retinal disease, so this test is a useful method of determining if you have normal, healthy spatial vision appropriate to your age. The test is also often used as a follow up after refractive surgery to quantify the success of the operation. It is also extremely useful when used in conjunction with the CAD test to distinguish between changes in the optics of the eye or changes in the retina.
What is unique about Acuity-Plus
The Acuity-Plus test offers highly detailed measures of Visual Acuity (VA) and Functional Contrast Sensitivity (FCS) and therefore produces more accurate results than the typical Snellen chart. The test can also be used to investigate the applicant’s sensitivity to visual crowding.
Who can benefit from it?
Everyone can benefit from the use of this test which provides a more detailed description of one’s spatial vision under both photopic (daylight) and high mesopic (twilight) conditions. The test measuring visual acuity (VA) and functional contrast sensitivity (FCS) and reveals the presence of large higher order aberrations, increased scatter in the eye and / or residual, uncorrected refractive errors. Assessment of spatial vision under mesopic lighting conditions is recommended for anyone with particular interest or concerns about their night vision. Specifically, it is relevant to people in careers that require all round good vision such as pilots, seafarers and police officers, and can be taken in conjunction with a CAD and Flicker-Plus tests to determine the overall quality of one’s vision.
Other relevant tests
Other tests that are often useful to carry out in conjunction with Acuity-Plus, are the Light Scatter and the Aberrometry assessment tests. These provide information on higher order optical aberrations and light scatter in the eye.