Background: Acute angle closure glaucoma (AACG) is a true medical emergency. Glaucoma is the second leading cause of blindness worldwide. Aim: To assess the effect of immediate implementing standardized nursing care on outcomes of patients' with AACG. Methods: Quasi-experimental research design was used to conduct this study. The sample size calculated about 40 cases for each group include in the study. Data was collected using two tools Tool (1):- Patient assessment sheet. Tool (II):- Manifestations Assessment sheet. Results: There was a statistically significant difference before and immediately after implementing a standardized nursing care on patients outcomes with AACG regarding intra ocular pressure (P-value10.806, 0.124, 0.147), visual acuity and pain score among the studied groups p-value (0.002, 0.023, and 0.001) respectively. 65.0% of the studied groups had satisfactory level of knowledge regarding visual acuity, intra ocular pressure (IOP), and pain score characteristics. Conclusion Implementing a standardized nursing care had a positive effect on outcomes of patients' with AACG. Recommendations: Screening all people aged 40 years or more for symptoms &signs of glaucoma. Health education programs about standardized nursing care rules for patients' with AACG.