Graham Field Ishihara - Test Chart Books, for Color Deficiency Graham Field Lumex Select Series Foam Mattress -Concentrator-weighs less than 9 pounds

-Concentrator-weighs less than 9 pounds and offers a continuous oxygen flow or pulse

Designed for optimum performance and capable of communicating data to EMR/EHR via the scale's RS232 serial port

The comfortable design limits pressure and gives you the freedom and mobility to sleep how you want

For Use With:

Graham Field Ishihara - Test Chart Books, for Color Deficiency Graham Field Lumex Select Series Foam Mattress -Concentrator-weighs less than 9 poundsGraham Field Ishihara Test Chart Books, for Color Deficiency What is colorblindness? Color blindness (color vision deficiency) is a condition in which certain colors cannot be distinguished, and is most commonly due to an inherited condition. Red Green color blindness is by far the most common (99%) form and causes problems in distinguishing reds and greens. Another color deficiency Blue Yellow also exists, but is rare (1%) and there is no commonly