BINGO! That's why I tought when I read the publications of Professors John Stein, Alex Richardson and Fowler from Oxford University (Laboratory of Physiology) they give an overview of the effects of Dyslectic brain: "The Magnocellular Theory of Developmental Dyslexia" (link) covering topic's such as:

• DYSLEXICS’ VISUAL MAGNOCELLULAR SYSTEM (p.17)

• THE DYSLEXIC LGN (p.18)
• MAGNOCELLULAR SENSITIVITY AND ORTHOGRAPHIC SKILL (p.19)
  
• VISUAL PERCEPTUAL INSTABILITY (p.20)
  
• BINOCULAR CONTROL (p.20)
  
• POOR VISUAL LOCALIZATION (p.21)
  
• MONOCULAR OCCLUSION (p.22)
  
• GOOD MAGNOCELLULAR FUNCTION IS ESSENTIAL FOR STABLE BINOCULAR FIXATION (p.23)
• AUDITORY/PHONOLOGICAL PROBLEMS (p.23)

At the topic of "MONOCULAR OCCLUSION (p.22)" they write about the following test:

"The most convincing way to show that one phenomenon causes another is to show that changing one changes the other. Thus our demonstration that blanking one eye, monocular occlusion, can improve some children’s reading is important evidence that binocular confusion is a significant cause of reading problems. As we have seen, abnormal magnocellular function may cause such binocular instability (1). Since these eye movements are unintended and uncontrolled, they may be misinterpreted as movements of the letters. Since this instability often causes the two eyes’ lines of sight to cross over each other, the letters appear to move around, slide over each other, and change places. This is why simply blanking the vision of one eye can simplify the visual confusion and help these children to see the letters properly (2). We have repeatedly confirmed this. In children with binocular instability, occluding the left eye for reading and close work relieves their binocular perceptual confusion and helps them to learn to read."

In a second publication "Monocular occlusion can improve binocular control and reading in dyslexics." (link) they go deeper in to the matter.

(1) & (2) These two phrases correspondent to my experience of reducing the Alpha-area by laying a finger between my eyes, reducing instability and simplifying visual confusion. But there's an extra: by increasing the alpha space between the eyes, the peripheral view of both eyes is decreased, this creates lesser input for the M-pathway, giving the smaller M-layers of the LGN some relief. (see topic: 3.2 Dyslexia and LGN )