jonmdwest

I saw a painting in the museo de la reina sofia in madrid a couple of weeks ago and I since i dont know the artist or the title I am struggling to locate it. It is on the ground floor of the museum and captures a woman looking at an eye chart seemingly having an eye examination. Through a window a stream of light passes in to the room and refracts through a prism showing a spread of colours. On the floor there is a pin hole camera screening the image of a face. it is a surrealist painting and it seems to be about colourblindness. I would really appreciate some help...