Treatment of Regular Astigmatism of Less Than 3.00 D
This protocol addresses the management of regular astigmatism measuring less than 3.00 diopters — a low-to-moderate refractive error defined by a predictable, meridian-by-meridian variation in corneal refractive power.
The patient presents with regular corneal astigmatism below 3.00 D. In this form of astigmatism, refractive power varies successively from one meridian to the next, with each meridian maintaining a uniform curvature. This pattern places the condition within the low-to-moderate range of refractive error.
Multiple correction options are available in this setting. Among the surgical approaches addressed in this protocol, refractive surgery to the cornea is an included option — the full protocol contains the structured selection algorithm, eligibility criteria, and procedural details.
References
- In regular corneal astigmatism, the refractive power varies successively from one meridian to the next, and each meridian has a uniform curvature.
- In this document, low to moderate refractive errors are defined as spherical equivalents of less than 6.00 diopters (D) of myopia, less than 3.00 D of hyperopia, and less than 3.00 D of regular astigmatism.
- Correction options include eyeglasses, contact lenses, and surgery.
- These include refractive surgery to the cornea, such as LASIK and photorefractive keratectomy, and lens surgery, such as clear lens extraction, phakic intraocular lenses, and cataract surgery.