Demystifying Coverage

"I just want a pair of glasses...why is this so hard?"

Demystifying Coverage

For many of us it’s easy to be confused and frustrated when trying to understand your vision benefits and best options for buying glasses. Frequently asked questions include:

"Why are there so many lens options?"…"With all the mark-ups in eye wear how much will it cost me, and am I paying too much?"…"What does my vision plan coverage offer & am I getting the best value?"

Keeping It Simple

At Davis Vision we will clarify your unanswered questions about eye wear and eye care. Let’s begin with understanding some of the primary components which include, providers, frame selection, lenses, and understanding your prescription!

Providers also known as eye doctors, who are part of your in-network coverage, provide you with an eye exam that includes dilation and typically does not require any copayment or out-of-pocket cost.

Frame Selection allowances are fairly commonplace with most vision benefits coverage. However, consider your budget when shopping as some frames have as much as 300%+ mark up and will frequently require varying out-of-pocket cost over and above your allowance. Simply stated you would be responsible to pay the difference between the total cost of the frames and your allowance. At Davis we limit the cost by fabricating the glasses in our own labs and by offering them through our exclusive collection at no cost or a low copayment.

Lenses come in a variety of types, shapes, sizes and coating(s). The cost directly depends on the type of lens and coating(s), and the brand which may also have a higher cost. Some popular lens types include polycarbonate, high index, and progressive. Coatings include ultra-violet, anti-reflective and scratch resistant. Refer to "Lenses and Coatings Lingo" to learn more.

Making Sense of Your Prescription

Click on the sample prescription pad to understand more.

See a description of each item highlighted on the sample prescription pad (below) to understand more.

Prescription SymbolPrescription Symbol

Doctor of Optometry
175 East Houston Street
San Antonio, Texas 78205

Patient Name:
Expiration Date:
6Distance8OD-0.75 SPH   

Vertex lenses used in this examination; finished lenses to correspond.

OD Add reading
OD Add Intermediate
OS Add Reading
OS Add Intermediate
1 Sphere: Represents the amount of power, measured in diopters, the lens needs to provide clearer vision. Farsightedness is represented when written with a (+) symbol, whereas nearsightedness is represented when written with a (-) symbol.
2 Cylinder: Represents the amount of lens power, measured in diopters, which is needed to correct astigmatism. Farsightedness is represented when written with a (+) symbol, whereas nearsightedness is represented when written with a (-) symbol.
3 Axis: Represents the position of the amount of astigmatism and is used by labs to determine how to orientate the cylindrical lens to correct the astigmatism. Orientation measurements range from 0 - 180 degrees.
4 Prism: A measurement amount used to correct eye alignment. The prism targets eye turn, or "lazy eye", and double vision.
5 Base: Works with the Prism in correcting eye alignment. The base can be positioned up, down, in, or out.
6 Distance: Signifies the prescription lens power needed to clearly see objects far away.
7 Add: This is the near prescription needed for presbyopes. Additional positive power is necessary to magnify the distance prescription and restore the near vision.
8 OD: Right eye.
9 OS: Left eye.

Click Here for Lenses and Coatings "Lingo"