Bilateral Concurrent Eye Examination with a Head-Mounted Perimeter for Diagnosing Functional Visual Loss

ABSTRACT

The authors here report a case series where bilateral concurrent eye examination, using a head-mounted perimeter (imo®), was employed to facilitate diagnosis of functional visual loss, as regular ophthalmological tests were ineffective. Subjects (11-year-old female, 15-year-old male, and 24-year-old male) were diagnosed with unilateral functional visual loss by using the imo®, at the Kitasato University hospital. The results of the imo® and those of Goldmann perimetry or Humphrey Field Analyzer II differed for all subjects, which is indicative of potential functional visual loss. Bilateral concurrent examination with the imo® may become a standard for future diagnosis of unilateral functional visual loss.

KEYWORDS:

• Bilateral concurrent eye examination
• functional visual loss
• head-mounted perimetry

Acknowledgements

We would like to thank Editage (www.editage.jp) for English language editing.

Declaration of Interest

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of the article.