#Spectacle for mac os x plus

The shapes and meanings of the extraordinary global images that emerged from this process form the subject of this highly original and richly textured study of cultural geography. This will also ensure that your contact or eyeglass prescription is up to date.As early modern Europe launched its multiple projects of global empire, it simultaneously embarked on an ambitious program of describing and picturing the world. To keep your eyes in optimal health you should have an annual eye exam.

For these prescriptions, you will see a number in the “ADD” column. For bifocal or progressives (multi-focal) prescriptions, your lenses will correct your vision for both near and far, and often times intermediate as well. If you have single vision correction, this means your vision is corrected for either farsighted or nearsighted, but not both.įor single vision prescriptions, the “ADD” column will be blank. Prescriptions look different depending on if you have a single or multi-focal prescription.

#Spectacle for mac os x plus

You will see a plus sign or minus sign in front of your eyeglass prescription, and that number is shorthand for farsightedness or nearsightedness.Ī “+” means that you are farsighted (trouble seeing things close up).Ī “-” means you’re nearsighted (trouble with seeing far away).ĭO YOU HAVE A SINGLE VISION OR MULTI FOCAL PRESCRIPTION? The further from zero that the numbers are, the more correction you need. There will be a number included on your prescription for each aspect of your vision that needs to be corrected. It’s used to correct presbyopia (the inability to see up close). It also tells the lens strength needed to fix it.ĪXIS- This describes the direction and degree of your astigmatism.ĪDD- This is the added magnifying power you need in the lower part of a multi-focal lens. This is a condition where the cornea is irregularly shaped and causes blurred or distorted vision. If you see this, this indicates astigmatism. If you happen to see the letters ADD, this is how much more power you need if you are getting bifocals or progressive lenses.ĬYL- This is short for cylinder. SPH- This is short for sphere, and basically tells you how powerful your prescription needs to be in order to correct your vision.

O.U.- This is oculus uterque, meaning both eyes.Īlong the top, you might see different verbiage that generally has to do with measurements related to different aspects of your vision.

O.S.- This is oculus sinister, meaning left eye. O.D.- This is oculus dexter, meaning right eye. It will contain terms, abbreviations, and numbers.Īlong the left-hand side, you might see these abbreviations. Most of the time you will find that your eyeglass prescription is written in a grid-like format. Whether you’ve worn glasses for years, or this is your first time, understanding your prescription will give you an insight into the health of your eyes as well as your overall health. You also happen to look at your prescription and start to wonder what all those letters and numbers exactly mean. Now that you just finished having your eye exam, you have your prescription in your hand and you’re wondering what style eyeglass frames will look best on you.