The study approach adopted for the study was pre experimental one group pre test and post test research design to assess the effectiveness of structured teaching programme on knowledge and attitude on prevention of computer vision syndrome among software professionals working in selected i t companies, bangalore.The sample size consists of 50 software professionals. Data will be collected by administering the structured knowledge questionnaire and five point liker attitude scales. STP was given to the sample before and after test. Convenient sampling technique was used to select the software professionals.