Retinal Imaging

The Need

The interaction between light and the eye’s retina is rich with information that assists doctors in diagnosing and treating ocular disease. This information is provided by scattering characteristics of the tissue layers in the back of the eye. Scanning laser ophthalmoscopy (SLO) can be used to investigate both static and dynamic properties of the eye. For many studies, there is an increasing need to use near-infrared light that can penetrate deep into tissue. Unfortunately, there are no commercially available receiver modules that provide the desired responsivity and bandwidth (20 to 50 MHz) at longer NIR wavelength.

RMD’s solutions

RMD is using our APD and custom circuit technologies to develop a photodetector module with exceptional response from 800 nm to 1070 nm. Studies with the module integrated in an adaptive optics SLO system at the University of Alabama, Birmingham, have produced high resolution images of the human retina across a spectral region that has been previously unexplored with a single detector.

In collaboration with the University of Alabama, RMD’s scientists are developing a high-speed adaptive optics ophthalmoscope for high resolution retinal imaging.