Assertion: astigmatism | /r/HasProperty | irregular
Facets:
value: in vision problems
type: OTHER
value: in the eye
type: LOCATION
value: in difficulty
type: OTHER
value: in most cases
type: TEMPORAL
Source sentences:
text: Astigmatism, whether it is regular or irregular, is caused by some combination of external (corneal surface) and internal (posterior corneal surface, human lens, fluids, retina, and eye-brain interface) optical properties.
text: Astigmatism, whether it is regular or irregular, is caused by some combination of external (corneal surface) and internal (posterior corneal surface, human lens, fluids, retina, and eye-brain interface) optical properties.
text: Astigmatism is normal.
text: Astigmatism is an abnormality in the curvature of the eye’s lens or cornea.
text: In most cases, astigmatism is the regular type affecting the cornea.
text: Astigmatism is an irregular curve in the eye.
text: Astigmatism is an irregular corneal surface and results in vision problems or difficulty focusing.
text: Astigmatism can also be regular or irregular.
text: If the astigmatism is irregular or of a high degree, glasses or a soft contact lens may not fully correct the astigmatism and a hard contact lens may be necessary to allow the eye to see normally.
text: The perpendicularity of the principal meridians of the cornea determines whether the astigmatism is regular or irregular.
text: Astigmatism can be either regular or irregular.
text: If the astigmatism is irregular or of a high degree, glasses or a soft contact lens may not fully correct the astigmatism and a hard (rigid) contact lens may be necessary to allow the eye to see normally.
text: When the meridians are not 90 degrees apart, then the Astigmatism is irregular, which is rare.
text: Astigmatism can also be regular or irregular.
text: Most astigmatism is regular.
text: The perpendicularity of the principal meridians of the cornea determines whether the astigmatism is regular or irregular.
text: Astigmatism can be either regular or irregular.
text: Most astigmatism is regular.