I have been trying to get to the bottom of my issues with processing pattern for three years now. First I thought it was astigmatism, then I thought it was my binocolular vision. Sometimes I do have these issues but I knew there was something else going on. It isn’t just lines or grids that I can’t process. It is the pattern of blades of grass and branches on a tree. Or looking at the shelf above our fireplace, the sharp edge of my desk, or the food on my plate.
Some days the problem is there and some days it isn’t. It all depends on my perception of the spectrum. If the spectrum feels more balanced, then pattern feels more integrated. If the spectrum feels unbalanced, then lines and patterns seem to stand out.
My experience of the spectrum is that if I perceive a little too less of one or more colours, then I have an unbalanced perception of colours around me. For instance, if I perceive a little too less red, then all colours will be affected and some of them , especially white, will lack warmth. A sky, for instance may appear more stark than it would do with more red light. This stark feeling is hard enough, but if I then look at a pattern of brown branches on a tree against the stark white, the contrast becomes too great and I feel disturbed by what I see.
My difficulty with pattern is more pronounced between the brighter months of February and October, although it drops off and things appear visually softer from April to May, only to reappear again in June and drop off from and July to September. I can only describe the feeling like watching the television on a setting beyond high definition. It is not comfortable and confuses my brain.