Types of Lenses Pop Quiz ( VT 2 of 4 Spring '25)

The characteristics of a plus lens are:

• Thick center, thin edge, and magnification
• Thick center, thick edge, and magnification
• Thin center, thick edge, and magnification
• Thin center, thin edge, and with motion

One of the ways of identifying a lens with minus power is to look for:

• Parallel rays of light coming to a point of focuse behind the ophthalmic lens
• Lens thicker in the center than the edge
• Objects seen through the lens are brighter
• Objects seen through the lens seem to move in the same direction as the lens is moving

Plus lenses can be characterized by the following two attributes:

• Diverging and with motion
• Converging and against motion
• Converging and with motion
• Diverging and against motion

Minus lenses can be characterized by the following two attributes:

• Real Image and Diverging
• Virtual Image and Diverging
• Real Image and Converging
• Virtual Image and Converging

Simple Myopia can be corrected with

• Prisms
• Plus Spherical Lens
• Minus Spherical Lens
• Cylinder Lens

An eye that requires a different correction in different merdians can be corrected with

• Prisms
• Plus Spherical Lens
• Minus Spherical Lens
• Cylinder Lens

Which Refractive Error does a cylindrical lens correct for?

• Myopia
• Hyperopia
• Astigmatism
• Both A and C

Which of the following structures is described as a circular opening that regulates the amount of light entering the eye

• Iris
• Crystalline Lens
• Cornea
• Pupil

Using Flat Transposition to evaluate the type of Astigmatism, identity the type of Astigmatism of the following Rx: -1.75 +0.50 x065

• Mixed Astigmatism
• Compound Myopic Astigmatism
• Compound Hyperopic Astigmatism
• Simple Myopic Astigmatism
• Simple Hyperopic Astigmatism

Using Flat Transposition to evaluate the type of Astigmatism, identity the type of Astigmatism of the following Rx: +2.25 - 3.50 x115

• Mixed Astigmatism
• Compound Myopic Astigmatism
• Compound Hyperopic Astigmatism
• Simple Myopic Astigmatism
• Simple Hyperopic Astigmatism