This device provides sphere, cyl and axis measurements.

The Plusoptix A12 is a battery operated device and can easily be used at different workplaces.
The device measures both eyes simultaneously and provides reliable measurement values of refraction, pupil diameter and interpupillary distance. With the binocular measurement, anisometropia and anisocoria can be detected immediately.
Used in un-dilated pupils, measurements of hyperopia, myopia, astigmatism and anisometropia provide valuable data for a quick vision examination. Results can additionally be used as a starting point for retinoscopy or to confirm retinoscopic results.

The measuring principle is based on eccentric photoretinoscopy. Infrared light is projected through the pupils onto the retina. Depending on the refractive error, the reflected light forms a specific brightness pattern within the pupil. The spherical refraction is calculated based on this crescent pattern. To determine cylinder and axis, the same measurement is repeated in three meridians. The measurement with infrared light is completely innocuous. Infrared light is also contained in daylight and not visible.

Application highlight - Transillumination Test, i.e. Red Reflex Testing

Plusoptix cameras can be used for red reflex testing. The advantage compared to using an ophthalmoscope is that pictures can be taken by a nurse, documented on paper and electronically and analyzed unhurriedly. Plusoptix cameras are the only cameras offering this feature.