Custom-made three-dimensional-printed adapter for smartphone slit-lamp photography

In this article, we introduce a custom-made smartphone slit-lamp adapter that is designed by one of the authors and made using three-dimensional (3D) printing technology. It is built upon a commercially available part used in selfie sticks and tripods which is used to hold the phone. The rest of the adapter is designed and 3D printed to enable attaching the mobile with that holder to the selected eyepiece. The design depends on each slit-lamp or microscope eyepiece dimensions, and the idea is about making a complementary design that automatically fits the eyepiece which slides in the adapter and then the mobile weight and gravity do the rest to hold the adapter in place. Within few seconds of sliding the phone into the adapter, place the camera against the eyepiece then you are ready to go. It is named blink to allude to its ease of use and quick adjustment like in a blink of an eye.