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The APD+8 Testers is a patented innovative device that allows simultaneous superimposed view of both pupils. The device shows both pupils superimposed at the same time and solve the challenge of detecting RAPD. The APD+8 Tester comes with Blue UV lights that supports detection of corneal lesions, abrasions, or foreign bodies when used with Fluorescein.
Relative afferent pupillary defects (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+8 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 Testers because they readily show sectoral iris constrictions.
A unique feature of APD Testers 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 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.
APD Tester versions with UV illumination support detection of corneal lesions, abrasions, or foreign bodies. They support 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 Testers empower observation of the Fluorescein pattern under magnification.
Coin batteries are readily available and easy to replace.
When first introduced, the APD Tester employed +20 diopter lenses for magnification, so we’ve renamed this product APD+20. The new version which employs +8 lenses is designated APD+8 and is available in several configurations:
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