Free ABO NOCE Trivia Question and Answers

Question 1

What are the two contemporary formats for writing prescriptions?

Accepted Answer

Plus-cylinder and minus-cylinder

Answer

Ophthalmic prescriptions for astigmatism can be written in two primary formats: plus-cylinder and minus-cylinder. These formats represent the same optical correction but use different conventions for specifying the cylinder power and axis. Minus-cylinder is more commonly used by optometrists and ophthalmologists, while plus-cylinder is sometimes used in manufacturing or older prescriptions, but both are valid and convertible.

Question 2

What is the term of the measurement of a lens's optical clarity?

Accepted Answer

Abbe value

Answer

The Abbe value is a crucial measure of a lens material's optical clarity, specifically its chromatic aberration or ability to disperse light. A higher Abbe value indicates less dispersion, meaning colors are less likely to separate into fringes, resulting in sharper and more color-true vision. This value is essential for assessing the quality of a lens material.

Question 3

The ________ lens at the 90th meridian always reads vertical imbalance error.

Accepted Answer

weaker

Answer

When checking for vertical imbalance error at the 90th meridian (which represents the vertical axis), the weaker lens is the one that will reveal the error. This is because the lens with less power in the vertical meridian has a reduced ability to compensate for any vertical deviation, making any existing imbalance more noticeable and problematic for the wearer.

Question 4

Which two types of frame materials are available?

Accepted Answer

Metal and plastic

Answer

Eyeglass frames are broadly categorized into two main types based on their material: metal and plastic. Within these categories, there are numerous sub-types, such as titanium, stainless steel, acetate, and nylon, each offering distinct properties in terms of weight, flexibility, durability, and aesthetic appeal. These two classifications encompass the vast majority of frame constructions available.

Question 5

What frame adjustment lowers the frame's front?

Accepted Answer

Spreading pads further apart

Answer

Spreading the nose pads further apart on a frame causes the frame front to sit lower on the wearer's face. This adjustment effectively increases the distance between the pads, allowing the frame to slide down the bridge of the nose. Conversely, bringing the pads closer together would raise the frame front.

ABO NOCE Basic Opticianry Practice Test

ABO NOCE Basic Opticianry Practice Test

Free ABO NOCE Trivia Question and Answers