Examination and analysis of refractive status of patients with pterygium

Objective:To explore the refractive state of patients with pterygium.Methods:40 patients(62 eyes) with primary pterygium were evaluated. Refraction,corneal curvature measurement and pterygium size measurement were used for the evaluations.Results:Visual acuity for 50 eyes was better than 0.4. Pterygium can induce various levels of astigmatism;the level is correlated to the size of the pterygium. 33 eyes(57.9%) had with-the-rule astigmatism and 36 eyes(63.2%) were hyperopic. The corrected VA for 50 eyes(80.6%) was better than 0.8. The results from subjective refraction and retinoscopic refraction measurements were significantly different from the results of auto refraction.Conclusion:Once pterygium reaches a critical size,it induces significant hyperopia and with-the-rule astigmatism. The values from retinoscopy and subjective refraction measurements were more accurate than autorefraction. VA can be improved and fatigue can be alleviated by wearing spectacle corrections.