brain injury

The term “Cortical Blindness” describes the partial or complete loss of vision resulting from a brain lesion. With this type of visual impairment the eyes can be fully intact, but the visual information cannot be transmitted to the brain regions in which these are processed into meaningful visual input such as brightness-contrasts, colors, objects, faces....

In the context of neurological visual field loss we very often hear about hemianopia, the loss of the right or left half of the visual field in both eyes. However, some patients with neurological visual field loss find the term “quadrantanopia” in their medical records. If “hemianopia” means that you cannot see in half of...

Depth perception – the ability to see our environment three-dimensionally – is based on “Stereoscopic vision”, which requires two intact eyes that are aligned and move synchronously. Try the following: place a round patterned object, e.g. a painted coffee cup, at arm’s length on the table in front of you. Select a dot from the...

Transient ischemic attacks (TIAs) are common, affecting at least 240,000 people each year in the United States. TIA’s can at times be mistaken for a stroke since it can mimic stroke-like symptoms. It is important to know the difference as TIA’s are a serious warning sign that a stroke may happen in the future and...