Is 150-degree astigmatism in the eyes severe?
Jun 29, 2022
Source: Cainiu Health
Dr. Chen You
Introduction
A 150-degree astigmatism is considered relatively severe. Astigmatism is generally classified as follows: mild (less than 100 diopters), moderate (100–200 diopters), severe (200–300 diopters), and very severe (over 300 diopters). Astigmatism results from irregularities in corneal curvature and can be categorized as either regular or irregular. Regular astigmatism can be effectively corrected to improve visual acuity.
There are many causes of astigmatism, the most important being changes in corneal curvature. After developing astigmatism, individuals may experience various adverse symptoms—including blurred vision, visual fatigue, and, in some cases, dizziness. Therefore, timely treatment is essential following diagnosis, along with appropriate daily care measures. So, is 150-degree astigmatism considered severe?
Is 150-degree astigmatism severe?
Astigmatism of 150 degrees is considered relatively severe. Astigmatism is generally classified as follows: mild (under 100 diopters), moderate (100–200 diopters), severe (200–300 diopters), and very severe (over 300 diopters). Astigmatism arises from irregularities in corneal curvature and can be categorized as either regular or irregular. Regular astigmatism can be corrected to improve visual acuity, whereas irregular astigmatism cannot be fully corrected with standard optical means; conditions such as keratoconus or other corneal pathologies must therefore be ruled out. Astigmatism is primarily caused by congenital (genetic) factors and acquired factors—such as ocular trauma, injury, or surgery.
Once astigmatism develops, appropriate lens-based correction is essential—especially in adolescents—to prevent complications such as amblyopia (lazy eye) or strabismus (misaligned eyes); regular follow-up examinations are strongly recommended. Regardless of the degree of astigmatism, corrective treatment should be initiated promptly if symptoms such as visual fatigue or blurred vision occur. Astigmatism of 150 diopters falls within the moderate range; if visual impairment is present, timely correction is mandatory.
Otherwise, the astigmatic refractive error may continue to progress, making subsequent treatment more complex. We hope this information has been helpful to you.
