Oscillatory movement

Article 1 Link: http://iovs.arvojournals.org/article.aspx?articleid=2179008
Article 1 Author: D G Birch; E E Birch; D R Hoffman; R U Uauy
Article 1 Date:  July, 1992
Article 1 Title: Retina development in very-low-birth-weight infants fed diets differing in omega-3 fatty acids.

Article 2 Link: https://www.ncbi.nlm.nih.gov/books/NBK11888/
Article 2 Author: W Hodge, D Barnes, HM Schachter, Y Pan, EC Lowcock, L Zhang, M Sampson, A Morrison, K Tran, M Miguelez, and G Lewin.
Article 2 Date: July 2005
Article 2 Title: 117 effects of Omega-3 Fatty Acids on Eye Health: Summary

Background: Oscillatory movement is the motion in the eye which repeats itself after equal intervals of time. This is related to "saccadic movement" which is rapid changes in position of the eyeball. This also relates to involuntary movement of the eye when the eye fixes in on an object.
Oscillatory movement and retina development is affected by a-linolenic acid deficiency and by a deficiency of docosahexaenoic acid (DHA) in infant formulas and term diets.

DHA is found highest concentration in the retina. Especially in the disk membranes of the outer segments of photoreceptor cells.
DHA is half of the fatty acids in the phospholipids of rod outer segment membranes.
Studies show that the DHA influences the biophysical properties of membranes through its high polyunsaturation, this may help to create a membrane that accommodates the dynamic behavior of rhodopsin during the photoreceptive process. (process that converts light into electrical signals in the rod cells, cone cells, and photosensitive cells in the retina of the eye).
DHA may also modulate the activity of membrane bound enzymes and receptors, kinetics of the membrane transport systems.