Lungs are the vital respiratory organs of the human beings. Poor respiration leads to various Obstructive Lung Diseases (OLD) such as bronchitis, asthma or even lung cancer. Pre-diagnostic tool to predict OLD using iris images has been proposed and implemented in the current research work. Two different models have been proposed to extract significant features, viz., one using wavelets and other using Gabor filter. SVM based classifier has been implemented for classifying subjects into healthy or one with obstructive lung disease. An accuracy of 89.0% and 88.0% in case of wavelet based model and Gabor filter based model, respectively, with a sample size of 100 has been obtained.