[Change of cone's motion perception in patients with primary open angle glaucoma].

OBJECTIVE

To assess the change of cone's motion perception in primary open angle glaucoma (POAG).

METHODS

Equi-luminance random dots moving test was used to determine the change of motion perception of blue, green and red cones in 51 eyes with POAG. To isolate the three kinds of cones, the blue, green and red visual targets were displayed on the yellow, purple and blue-green background respectively.

RESULTS

The direction discrimination thresholds of motion perception from blue, green and red cones were all damaged in POAG compared to that of the normal group, and among them the blue cone was the most obviously damaged.

CONCLUSIONS

These findings indicate that cone's motion perception, especially the blue cone's, may reveal pre-clinical visual nerve damage in POAG.