Introduction: Cataract is the clouding of the crystalline lens of the eye, placed at the back of the irisor in it envelop. cataract is very common in older people.1 There are, many causes for cataract; theyare smoking, diabetes, deterioration in the nutrition of the lens, deposits of acids and salt between lensfibers and disintegrate of lens fibers, use of alcohol and prolonged exposure to sunlight.2 Age relatedcataract occurs in 40s and 50s. Methods: The research design selected for study was a one group pre-testpost-test quasi experimental design. The study includes 60 caregivers who are selected as a sample bynon-probability convenient sampling technique. Result: The major findings of the study revealed that,majority of care givers 48(80%) had inadequate level of knowledge about pre and post operative careon knowledge and practice of clients undergoing cataract surgery, whereas 12(20%) of care givers hadmoderate level of knowledge and none of care givers had adequate knowledge regarding pre and postoperative care on knowledge and practice of clients undergoing cataract surgery before administrationof structured teaching programme.3However, significant increase in the post-test knowledge score ofcare givers after the administration of structured teaching programme.4 The post test data revealedthat, majority of care givers 40(66.67%) had average level of knowledge about pre and post operativecare on knowledge and practice of clients undergoing cataract surgery whereas 20(33.33%) of caregivers had moderate level of knowledge and none of care givers had inadequate knowledge regardingpre and post operative care on knowledge and practice of clients undergoing cataract surgery afteradministration of structured teaching Programme.5 Discussion: The findings of this study revealed thatknowledge of the caregivers having more knowledge regarding pre and post operative care after givingthe structured teaching programme.6