This is Dr. Long Chhour, an eye specialist, who has been testing and treating me for Age-related Macular Degeneration in my left eye. AMD in my case causes a fuzziness to appear in my central vision in that eye. The electronic unit is for testing with Optical Coherence Tomography (OCT). I have been lucky to find Dr. Chhour in Phnom Penh.
These are the OCT test results. The shallow part of the green curve indicates degeneration of the macula. It is a really interesting testing procedure.