# What does 'Y2' mean in eyeglass prescription?

### How importannt is it that the axis value of an eyeglass prescription be correct?

eyeglass prescription +50+150x110 transposed to minus cylinder

### Translate eyeglass prescription to reading glasses power?

if the prescription begins with a minus, add the plus to the minus for the reading glass prescription. if the prescription begins with a plus, add the plus to the plus. Is this what you mean?

### Can you demand your pupillary distance measurement on your new eyeglass prescription?

You can demand all you want, but it doesn't mean you will get it.

### How to convert bifocal eyeglass prescription to reading eyeglass prescription?

Converting a eyeglass a bifocal prescription to a reading prescription is a simple algebraic formula. Opticians are trained to solve these issues. Please see your local ABOC optician today. - Teresa Clay, ABOC - Integrity Vision Care. see us on Facebook.

### What is eyeglass prescription and where can you get one?

What is eyeglass prescription and where can I get one? An eyeglass prescription is a written order by an optometrist, ophthalmologist, orthoptist or an optician for eyeglasses. It specifies the refractive power to which the eyeglasses are to be made in order to correct blurred vision due to refractive errors, including myopia, hyperopia, astigmatism, and presbyopia. It is required by law your optometrist provide you with eyeglass prescription after an eye exam. Be sure to… Read More

### How long after cataract surgery is the patient given a final prescription for eyeglasses?

A final eyeglass prescription is usually given about four to six weeks after surgery.

### When does your eyeglass prescription expire?

That depends on your state policy. In Texas it is the eye doctors decision. I do not have an expiration on mine.

### How bad are your eyes if your prescription is -2.50?

If your eyeglass prescription is -2.50 this means that your eyesight is fair. Once it reaches -7.50 it simply means that you're a good candidate for eye surgery.

### How do you clean water spots on prescription glasses?

To clean water spots on prescription glasses, first rinse them in cool water. Next use a commercially available lens cleaning solution. This can be bought from an eyeglass store.

### What is OD SPH in eyes?

OD means Ocular Dexter, or Right Eye SPH means Sphere which is the spherical component of an eyeglass prescription

### When using the slope formula does it have to be (y2-y1)(x2-x1) or can it be (y1-y2)(x1-x2)?

If you mean: (y2-y1)/(x2-x1) and (y1-y2)/(x1-x2) then either works out the same.

### How much does a lightweight eyeglass weigh?

It depends what you mean by eyeglass. I have small telescope which weighs about 8 grams. I have an antique monocle which possibly weighs about half a gram.

### How do you convert bifocal eyeglass prescription to reading eyeglass prescription?

It is not that easy. Some people believe that a simple set of numbers for a prescription can be plugged into a formula and somehow a new prescription will be generated. It is best to go to your local Optometrist and fully explain what kind of reading do you want to perform best. Ther will be a certain amount of positive (convex) lens power that will provide the needed amount of correction at the most… Read More

### How do you factor xy-y2?

I'm assuming by y2 you mean y squared, so all you can do to factor that is take out a y so that you get y(x-y)

### How do you find the mean of ordered pair?

Each element is the mean of the corresponding elements. Thus, the mean of (x1, y1) and ( x2, y2) is [( x1 + x2)/2, (y1 + y2)/2]

### Where can you take a prescription eyeglass?

Before you take prescription eyeglasses, you have to get a prescription. First, you need to go to an Optometrist (someone you examines your eyes). If they tell you that you need glasses they will write a prescription for you on a piece of paper. After you get the prescription, you need to go to an Optician (someone who sells prescription glasses). Once you go to one, find a pair of glasses that you like, and… Read More

### Can tunnel vision be cured?

There is no cure for tunnel vision or peripheral vision loss. Peripheral vision loss can be treated with the use of a lens called prism that is added to a eyeglass prescription.

### OD is left or right eye?

The O.D. designation on an eyeglass or contact lens prescription means the right eye or oculus dexter. The O.S. means left eye or oculus sinister.

### What are common vision changes from cataracts?

Gradual, painless onset of blurry, filmy, or fuzzy vision; poor central vision; frequent changes in; eyeglass prescription; changes in color vision.

### What does it mean when you dream about eye glasses?

The message of this dream might be very simple and practical: perhaps you need to update your eyeglass prescription or perhaps you simply need eyeglasses. On the other hand, the dream may be telling you that you are not seeing (understanding or comprehending) your current situation clearly. Perhaps you need to take a different point of view.

### What is the radius for a circle whose equation is x2 plus y2 16?

I think you have missed out an equals sign. If you mean x2 + y2 = 16, then the radius is 4.

### What is the answer to x10 - y2?

If x is 1 and Y is 5 and your x10 is really x to the tenth power (x10) and y2 is really y squared (y2) then: 110-52 = -24 there are an infinite number of answers depending on what it is that you mean with the notation that you have given.

### What is the most common treatment for myopia?

Eyeglasses are the most common method used to correct myopia. Concave glass or plastic lenses are placed in frames in front of the eyes. The lenses are ground to the thickness and curvature specified in the eyeglass prescription

### What is the difference between Versace eyeglass frames and other eyeglass frames?

The difference between ordinary eyeglass frames and the Versace eyeglass frames are that the Versace frames have been designed by a professional fashion expert and shaped to be extremely comfortable.

### What is y to the 8th power as an product in four different was with only positive exponents?

y6 x y2 y4 x y4 y2 x y2 x y4 y2 x y2 x y2 x y2

### What is the answer to y2 plus 8y plus 7?

If you mean y2+8y+7=0 then it is a quadratic. y2+8y+7+9-9=0 y2+8y+16-9=0 (y+4)2=9 y+4=3 , y+4=-3 y=-1 , y=-7 So y can equal -1 or -7.

### What does RxGRP mean?

Rx stands for prescription, GRP for group. It is the group number of your prescription.

### What is the person called that makes eyeglass lenses?

Eyeglass Technician or Lens Technician.

### What does sig on prescription mean?

It means "write". Basically you are telling the pharmacist to "write" or fill the prescription.

### What is the name for an eyeglass for one eye?

A monocle is the name for an eyeglass designed for one eye.

### Convert x2 plus y2 equals 2x?

What do you want to convert it to? x2 + y2 = 2x If you want to solve for y: x2 + y2 = 2x ∴ y2 = 2x - x2 ∴ y = (2x - x2)1/2 If you want to solve for x: x2 + y2 = 2x ∴ x2 - 2x = -y2 ∴ x2 - 2x + 1 = 1 - y2 ∴ (x - 1)2 = 1 - y2 ∴ x… Read More

### What is a single eyeglass called?

A single eyeglass lens is called a monocle and is rarely used nowadays.

### Does the wrong eye prescription cause headaches?

An incorrect eyeglass prescription may cause headache in some patients. However, there are over 300 different headache disorders and diagnosis by a doctor may be important to rule out other more serious problems. For appropriate diagnosis, treatment and information on Migraine and headache disorders, please seek the help of a board certified Migraine and headache specialist.

### How do you reach the room on top of the eyeglass room on Sye island?

Go out of the eyeglass place and go up to the dor

### What kind of glasses does Ralphie wear in A Christmas Story?

I believe it is the Liberty Legend eyeglass frame. I've been an optician for over 31 years and used to sell this frame way back then. This company now only sells prescription and non prescription sport glasses. I wish someone would bring them back into production. I could sell this frame again, since this style is popular once again.

### The circle is centered at the origin and the length of its radius is 8 What is the circle's equation?

The equation of a circle centered at the origin is x2 + y2 = r2; in this case, x2 + y2 = 64.