title: Amount of aniseikonia compatible with fine binocular vision: some old and new concepts.
abstract: Random Dot Stereograms (RDS) are useful, but are sometimes misleading in assessing the degree of binocular cooperation in the presence of aniseikonia. RDS may give positive results up to 15% aniseikonia, whereas a fine central binocularity is not possible with more than 5% image-size difference. It is suggested that stereopsis may not be the only parameter to test; stress is given to the importance of peripheral motor fusion in maintaining the eye alignment.
mesh_terms: D000550:Amblyopia / Q000150:complications; D000839:Aniseikonia / Q000150:complications / Q000175:diagnosis*; D003867:Depth Perception; D004172:Diplopia / Q000150:complications; D006801:Humans; D013285:Strabismus / Q000150:complications; D014787:Vision Tests