Objectives: the goal of this study was to assess the changes in corneal astigmatism after
pterygium removal with the bare sclera technique and conjunctival auto graft technique. Patients and
methods: the study included 40 eyes of 40 patients with primary pterygium who underwent
surgery in a prospective comparative study. Twenty individuals had their scleras removed using the
bare sclera procedure (group 1). The remaining 20 patients had their eyes removed and had
conjunctival autografts (group2). All patients had a complete ophthalmic examination, including visual
acuity, anterior and posterior segment examinations, refraction, and keratometry, preoperatively
and postoperatively at day 7, one month, and three months, with the results analyzed. Results:
preoperative corneal astigmatism was (3.521.66) on average. At three months, the mean postoperative corneal astigmatism was (1.431.12). At three months after surgery, there was a statistically
significant reduction in corneal astigmatism. At 3 months after surgery, the bare sclera method and
conjunctival autograft both showed a reduction in corneal astigmatism of (1.690.84) and (2.561.56),
respectively. Pterygium excision with conjunctival autograft is more successful than bare sclera
excision in lowering corneal astigmatism, according to the study (0.033). Conclusion: pterygium
removal reduces corneal astigmatism significantly and Pterygium excision with con-junctival
autograft technique resulted in better reduction of corneal astigmatism than excision with bare
sclera technique.