|There are many means of helping people with partial sight. They vary from simple hand held devices such as magnifiers to more complex optical devices such as loupes |
(please check out section on loupes). The benefit of loupes over simple magnifiers is that they can greatly increase magnification without shortening the focal point. In addition the focal point can be controlled to many different distances. Lastly, we have video and optical technology combined, which allows tremendous magnification of objects or print. The image size can be controlled as well as the color of the image. Many people with partial sight can more easily see certain colors. These images can be viewed on a TV screen, computer screen, or into goggles which contain a VCR screen. These devices can also be totally portable.
It is important for a person in need of low vision devices to be provided with professional guidance and a large selection of these devices. Although mail order is an option for some people it proves far less effective in comparison to a professional setting. Some of the most effective devices are often custom made to each individual.
Linder Opticians represents the following Low Vision optical lines:
What Does "reduced visual performance" mean?
Reduced visual performance is generally understood to be a visual impairment resulting from pathological or degenerative (age-related) changes in the eyes.
What effect does reduced visual performance have?
How visual performance is actually affected depends on the type of visual impairment present. Sometimes central vision (in the center of the retina) is impaired, leading to a reduction in ability to distinguish details. Spatial orientation remains intact, however due to what is known as peripheral vision. In these cases even the best spectacles are useless for reading newspapers or books, for example, or for making out details in the distance.
What can a patient with reduced visual performance do about it?
First and foremost, the eyecare specialist must diagnose what kind of visual impairment is present. He or she can then use this diagnosis to assess what the chances of success are and what special aids to test.
What are "special visual aids"?
These are specially designed visual aids which provide magnifications for near and/or far vision. Various optical systems are available for hand use or for integration into or attachment to spectacles. Many of our fine quality special visual aids allow for the possibility of using them for near and far vision at the same time.