astigmatism

n.

散光；

1. They have what is called astigmatism.
   他们有所谓散光。
2. Astigmatic dials are targets used for the detection and correction of astigmatism.
   散光盘是用于辅助检测并矫正散光的视标。

Prevalence of corneal astigmatism before cataract surgery
Evaluating and reporting astigmatism for individual and aggregate data.
Oblique (off-axis) astigmatism of the reduced schematic eye with elliptical refracting surface.
Foldable toric intraocular lens for astigmatism correction in cataract patients
Laser in situ keratomileusis for moderate and high myopia and myopic astigmatism
Power semiconductor laser with low divergence and low astigmatism, and method for the production thereof
Laser in situ keratomileusis for myopia from -5.50 to -11.50 diopters with astigmatism.
Laser in situ keratomileusis for myopia and astigmatism: safety and efficacy: a report by the American Academy of Ophthalmology
Deep lamellar endothelial keratoplasty visual acuity, astigmatism, and endothelial survival in a large prospective series.
Ocular optical aberrations after photorefractive keratectomy for myopia and myopic astigmatism