https://www.theverge.com/tech/2017/8/21/16178936/samsung-gear-vr-oculus-relumino-low-vision-free

Back in February, Samsung’s tech incubator C-Lab announced visual aid app Relúmĭno was coming for Gear VR, and now it’s available in the Oculus Store. The app can be downloaded for free with a verification code and works with newer models of Galaxy smartphones — including the Galaxy S7, S7 Edge, S8, and S8 Plus.

Relúmĭno helps people with low vision in several ways: it can magnify or minimize images, adjust brightness and sharpness, highlight objects with an outline, invert colors when reading text, add a color filter to the screen, enhance a user’s peripheral field if they have tunnel vision, and even assist people with scotoma by helping them see what is blocked by their blind spot in the surrounding area.