Figure 3.

Schematic diagram of the dichoptic letter position and contrast presented via dichoptic shutter or polarised glasses. The top image is an example of letter presentations to each eye. The second image shows perceived letters when the highest contrast letter at a given position is dominant. The third image shows perceived letters for normal binocular vision with dichoptic presentation. The final image shows perceived letters for an observer with an amblyopic left eye where the left eye letters are salient at 90% contrast, however letters of 70% and 60% were not salient over those lower contrast letters presented to the dominant right eye. Reproduced with permission from Birch et al. (2016)¹⁶