Assertion: astigmatism | /r/HasProperty | due
Facets:
value: mostly
type: DEGREE
value: in less common cases
type: OTHER
value: usually
type: DEGREE
value: to the cornea
type: CAUSE
value: simply
type: DEGREE
value: to variations between people
type: CAUSE
Source sentences:
text: Astigmatism in the electron microscope is largely due to deviations from cylindrical symmetry in the radial components of the magnetic field of the lens and is the result of imperfect construction of the lens.
text: Astigmatism is quite common and, in the vast majority of cases, it is due simply to variations between people.
text: Astigmatism may be present from birth, develop as you age, or may be due to injury or disease.
text: Astigmatism is due to an irregularly shaped cornea, toric crystalline lens or toricity of the retina.
text: Astigmatism is mostly due to the cornea, so we will forget about the crystalline lens for now.
text: An astigmatism is usually due to an imperfection in the curvature of the cornea, resulting in perception of objects as oblong and blurred.
text: In less common cases, astigmatism can be due to corneal conditions, such as keratoconus.