APD Screener is a patented innovative device that allows simultaneous superimposed view of both pupils. This unique device shows both pupils superimposed at the same time and thereby solves the challenge of detecting RAPD (relative afferent pupillary defect). Optional version with UV illumination supports detection of corneal lesions, abrasions, or foreign bodies.
Relative afferent pupillary defect (RAPD, also known as Marcus Gunn Pupil) can be difficult to detect. Further, dark irides and sluggish pupils are often challenging to examine. The APD Tester illuminates and magnifies the eye, so small contractions in the collarette of iris are readily seen. In other patients, post-surgical or post-traumatic pupils can show reflexes to light in a small sector or iris. These can also be detected using the APD Tester which readily shows sectoral iris constrictions.
A unique feature of APD Tester is the examiner’s ability to view both pupils superimposed at the same time. Illumination, however, can be directed to one eye at a time. This method permits observation of a direct response by both pupils. Switching the light to induce a consensual pupillary response easily shows any discrepancy between the pupil reactions. This patented feature helps detect the slightest variation in RAPD. While the APD Tester can be used in normal room lighting, some observations can be enhanced with diminished room lighting.
APD Tester version with UV illumination supports detection of corneal lesions, abrasions, or foreign bodies. It supports evaluation of Fluorescein pattern for corneal health and observation of certain types of contact lenses. For rigid gas-permeable contact lenses and hybrid contact lenses the APD Tester empowers observation of the Fluorescein pattern under magnification.
Fold down flipper can be used to set correct observation distance. Available with a +8 magnifying lens. Coin batteries are readily available and easy to replace.