The refractive state of the eye may be altered by
A. Constriction of the ciliary muscle
B. Change of the corneal curvature
C. Increase of the lenticular thickness
D. Elongation of the axial length of the eye
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Which of the refractive state belong to with-the-rule astigmatism?
A. –0.50DS/ +1.50DC x 90°
B. -2.50DC×110°
C. -0.75DS/ -1.00DC×160°
D. +2.25DS/ +2.75DC×145°
Which spectacles may be chosen for correction of refractive error?
A. Bandage contact lens
B. Spherical lens
C. Prisms
D. Cylindrical lens
Patients with astigmatism may complain about
A. Blurred vision
B. Distorted vision
C. Visual strain
Double vision
Refractive Errorcontains
A. Myopia
B. Hyperopia
C. Astigmatism
D. Presbyopia
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