Z-Axis Accommodative Rock Chart

The Z-axis accommodative rock chart add an additional challenge to the traditional Hart Chart training. The numbers or letters of the original Hart Chart have been separated into two charts by putting every other line of digits onto a second chart. The letters on the second chart are 50 percent of the original. The point of the exercise is to add a third distance for accommodation between the traditional near and distance chart. This chart may be placed at various distances or positions. This is an excellent sports vision activity.