Aim: This study aims to evaluate the extent and nature of astigmatism following pterygium excision surgery in a sample of 50 patients at a tertiary eye care center. Astigmatism is assessed using manual keratometry and refraction. Setting & Design: This was a prospective Observation study conducted between August 2023-2024 over a period of 12 months at Tertiary Care Hospital. A total of 50 patients who underwent pterygium excision surgery were included in the study. All patients were followed up postoperatively at regular intervals to assess changes in astigmatism. Methods: Patients with pterygium who met the inclusion criteria were thoroughly examined and underwent pterygium excision with Limbal Conjunctival Autografting surgery. Statistics: Changes in astigmatism were evaluated using paired t-tests to compare preoperative and postoperative measurements. Conclusions: Pterygium excision with conjunctival autografting significantly reduces astigmatism and improves visual acuity in patients with primary pterygium.