Quiz For Rx Sunwear / Rimless Eyewear

The cumulative effects of spending long hours in sun without adequate eye protection can increase the likelihood of developing_______________________,

1. cataracts
2. snow blindness
3. pterygium
4. skin cancer around the eyelids

Visible light is part of an overall spectrum of energy called:

When numbers are used to designate tint density, lower numbers specify a ___________density.

Exposure to ____________light causes photochromic lenses to darken

The term “photochromic” refers to a:

All photochromic lenses share the following traits:

1. They all block potentially harmful UVB rays
2. They are all made from high index materials
3. They are all activated by UV wave lengths
4. They all have low ABBE values

Ambient, unpolarized light travels in:

Reflected light waves tend to travel in________planes.

Uniform, nonrandom concentration of reflected light is known as:

1. reflection
2. glare
3. polarized light
4. aberration

Which of the following can be a source of glare?

A polarized filter is produced by:

Prescription wrap sunwear with steep base curves can adversely effect the wearer’s vision due to:

1. changes in the base curve
2. tilts in the vertical plane of the lens
3. changes in temperature
4. no special optical considerations are needed

Optimizing a prescription wrap lens takes into account the ___________________and usually results in base in prism and a slight adjustment of power.

Filling a wrap Rx with no compensation:

When verifying the Rx on wrap sunwear, the compensated power will read on the lensometer when

Photokeratitis is sometimes referred to as:

The portion of the electromagnetic spectrum which the photosensitive receptors of the retina respond lies about in the middle lengths of the spectrum and we call it ______.

Metallic oxide applied to the lens surface in a vacuum can be used to

Photochromic technology first began with

Polarized lenses reduce ________, not brightness, allowing greater transmission of light for better visual acuity.

Pince-nez eyewear ________________

1. was comfortable and easy to wear
2. pinched the bridge of the nose in a precarious fashion
3. was good to wear with cylindrical prescriptions for the correction of astigmatism
4. was generally uncomfortable and difficult to wear

Today’s rimless mountings are:

The _______________ design has a top rim or arm for each eye that attaches to a bridge to which the lens is attached.

The _______________ design consists of three parts: a bridge and two end pieces.

____________ is ultra light compared to other types of metals and it has a high tinsel strength.

____________ is a titanium-based alloy which is proprietary to frame manufacturer Marchon.

____________ is an alternative to titanium. It is light weight yet very strong and flexible and it resists corrosion.

____________ is made primarily of iron and chrome. It has a springy effect which makes it especially useful for temples.

Glass lenses:

Impact resistance and tensile strength are properties that make a lens material particularly suited for use in drill mounts. These properties are found in:

1. polycarbonate
2. trivex
3. high index glass
4. CR39

When drilling polycarbonate it’s best to:

Adding anti-reflection coating to a rimless frame will:

____________ is a mounting technique which uses prongs which are fitted onto the bridge and endpieces

The index of refraction of polycarbonate is:

When adjusting the end piece of a rimless mounting it is best to use:

Low ABBE values can mean that colored “________” images may be perceptible around objects.

Glass that is drilled, notched, grooved or otherwise compromised will not be able to pass the federally mandated _________.

An AR coating with oleophobic properties means the lens resists:

An AR coating with hydrophobic properties means the lens resists:

Compression Technology