VistaVision has just released the lastest version of software for all models. A great effort from the DMD MedTech Company to mantain the products at the top with the best price available worldwide.
DMD Medtech is the european leader company for 22″, Anti-glare, Positive polarization, LCD Chart system: a unique solution for both monocular and binocular tests.
The new software improvements availbale for free are:
New CROSS test (with or without fixation point) added to test phoria;
Most people will discover the need for period vision tests when they are in grade school. People with vision problems begin to notice that they have difficulty reading figures and various symbols written by the teacher on the blackboard in class. Some children will be inspired to improve their vision acuity by moving closer to the blackboard, but after a while, even this remedy does not seem to be effective. Most children will voice the problem to parents over dinner and wait patiently for an answer.
Many people correlate a ‘healthy’ lifestyle with measures such as exercising, taking vitamins, eating healthily, and refraining from smoking. However, ensuring your health is fully in shape takes even more. Sometimes, it’s necessary to consult a health professional for check-ups, just to ensure everything is as it should be.
One example of this has to do with your vision. Even if you don’t notice a drastic difference with your eyesight from day to day, it’s possible for your vision to change over an extended period of time. If you already wear glasses or contact lenses this could mean requiring a new prescription.
It is recommended in the UK that people with eye or vision problems should have an eye test every two years. There are a variety of reasons behind this, and it is very important that you do get regular eye tests because they could save you a lot of trouble in later years.
Primarily, eye tests serve as a check up to ensure that your vision correction prescription – ie, your glasses and/or contact lenses – is up to date. Without the right prescription, not only can your sight suffer but the condition of your eyes can decline overall. This means that bigger problems could occur in the future that can be rectified in advance simply by having an eye test.
If you don’t currently wear glasses or contact lenses, you might find that when you think of an eye test the picture conjured up in your mind is the card and chart of your school days. While eye tests when you were a child were great for identifying those who might need help in correcting problems with their vision, eye tests have come a long way since.
Good vision such as 20/20 does not mean satisfying contrast sensitivity. Common vision tests using black letters or numbers displayed against white backgrounds can not reflect your exact contrast sensitivity, since the real world is filled with grey shades. So that special contrast sensitivity testing is necessary.
May eye diseases or conditions may cause poor contrast sensitivity, such as cataracts, glaucoma, and diabetic retinopathy, as well as the side effects from LASIK and PRK. People with low contrast sensitivity may have difficulty in some conditions, such as seeing traffic lights, spot other cars and pedestrians during night driving. Since these people have poor perception of objects that do not stand out from their backgrounds, they may even stumble when they fail to see similarly colored pavements.