Visual field testing
Visual field testing
Visual field testing, also known as perimetry, is a diagnostic test used to assess an individual’s visual field, which is the area seen by the eye without moving the head or eyes. The test measures the scope of peripheral vision and detects any defects or blind spots.
There are different types of visual field tests, including:
- Automated perimetry: Uses a machine to project points of light onto a screen and records the individual’s responses.
- Manual perimetry: Uses a technician to move a target slowly into the individual’s peripheral vision.
- Confrontation visual field test: A simple test where the individual is asked to count fingers or look at objects in their peripheral vision.
Visual field testing is used to:
- Diagnose and monitor eye diseases, such as glaucoma
- Detect brain disorders, like stroke or brain tumors
- Monitor vision changes in patients with eye injuries or diseases
- Assess visual function in patients with neurological disorders
The test is usually performed by an eye care professional (optometrist or ophthalmologist) and takes around 15-30 minutes to complete.
Note: While visual field testing is not directly related to dentistry, it is an important diagnostic tool for eye health, and dentists often work closely with eye care professionals to ensure overall patient health.