Stability of vergence accommodation and accommodative vergence assessment

Pascaline Neveu (1) , Matthieu Philippe (1) , Anne-Emmanuelle Priot (1, 2) , Philippe Fuchs (3) , Corinne Roumes (1)

1 IRBA - Institut de Recherche Biomédicale des Armées [Brétigny-sur-Orge]
2 Espace et action
3 équipe RV&RA

Accommodation and vergence are two components of the oculomotor system that are cross-linked. This interaction is hold by the accommodative vergence (vergence induced by accommodation) and by the vergence accommodation (accommodation induced by vergence), respectively assessed through AC/A and CA/C ratios. Repeating the measurements, those ratios may vary due to the procedure and to physiological variations or to adjustments of the oculomotor cross-links. In order to further analyse such variations, AC/A and CA/C measurements were assessed daily during three days using laboratory (haploscopic) and clinical procedures. Subjects had routine activity during the three day period of test. Any variation on the test values is assumed to be due to the procedure and to physiological variations. For each test (haploscopic stimulus AC/A, haploscopic response AC/A, clinical AC/A, haploscopic CA/C and clinical CA/C), a confidence interval is provided that covers the range of measurement and physiological variation. By contrast, adjustments of the oculomotor cross-links would result in larger changes.

Domaines: Synthèse d'image et réalité virtuelle [cs.GR]

Pascaline Neveu, Matthieu Philippe, Anne-Emmanuelle Priot, Philippe Fuchs, Corinne Roumes. Stability of vergence accommodation and accommodative vergence assessment. 16th European Conference on Eye Movements, Aug 2011, Marseille, France. pp.P 90. ⟨hal-00785342⟩