CompuEye, Leaf & Symptom Area is software that provides an easy and accurate method to measure total leaf area and the area of any visible symptom on the leaf. Symptom area on the leaf was traditionally measured qualitatively and it was usually inaccurate. This software provides a new facility to measure any symptom area quantitatively and accurately. A standard green shape with a known area of 1.5 cm2 was used to evaluate the accuracy of the software. Measurements varied between 1.4771 and 1.5095 cm2.