What is sphere power?
This is the main part of your prescription. This number denotes the strength of the lens as measured in diopters.If you have good distance vision without glasses, but need reading correction only, laser refractive surgery is not an option for you.
How can I check the optical quality of my sunglasses?
Find a repeating pattern, like a tiled floor or some wild wallpaper. Hold the sunglasses a few inches from your face, cover one eye, and move the sunglasses slowly up and down, left and right. Look through one of the lenses. If the lines stay straight, you’re holding quality sunglasses.
What is the difference in NeoVision and other optical stores?
Our highly skilled opticians help you in selecting the right frame to fit your face comfortably. People usually do not know what to look for in a frame and end up choosing frames that are not appropriate for their prescription or their facial features.Yes, the seg height can be raised either by bringing the nose pads together or by adding a pantoscopic tilt.Eyeglasses ordered under an insurance plan are usually processed by the insurance labs and we do not have much control over it.
What is the difference between plastic (CR-39) and polycarbonate?
The "standard plastic" lenses are often called "Hard Resin", "CR-39 plastic", or just quot;plastic" lenses. CR-39 is actually a PPG Industries registered trade name for a DADC (diallyl diglycol carbonate) polymer that was introduced in 1941. The "CR" stands for Columbia Resin and CR-39 was the 39th batch or formula made by Columbia Laboratories in Ohio.Frames are identified by manufacturer / designer, model number or name, size, and color information. Size information contains the horizontal measurement of each lens in millimeters (i.e. 47) and bridge size (the distance between the lenses) i.e. 18. This information can help you in sizing a frame for your face. To better understand the frame size, double the first number and add the second.
What is cylindrical power?
If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism. Like sphere power, the cylinder power is also measured in diopters.Anisometropia is a condition where there is a significant difference in the refractive errors of the two eyes. If this condition is present in infancy and is undetected or untreated, it often results in the development of lazy eye or amblyopia in the weaker eye. The greater the amount of the difference, the more likely the development of lazy eye will be. A problem can occur when glasses are made for an anisometropic individual.
Can laser eye surgery correct my need to wear reading glasses?
If you have good distance vision without glasses, but need reading correction only, laser refractive surgery is not an option for you. If you wear bifocals to correct both distance and near vision, you may be a candidate to have the distance vision corrected, but still have to wear reading glasses after.A diopter is a unit of measurement that is simply the inverse of the focal distance of the lens as measured in meters.
This is the main part of your prescription. This number denotes the strength of the lens as measured in diopters.If you have good distance vision without glasses, but need reading correction only, laser refractive surgery is not an option for you.
How can I check the optical quality of my sunglasses?
Find a repeating pattern, like a tiled floor or some wild wallpaper. Hold the sunglasses a few inches from your face, cover one eye, and move the sunglasses slowly up and down, left and right. Look through one of the lenses. If the lines stay straight, you’re holding quality sunglasses.
What is the difference in NeoVision and other optical stores?
Our highly skilled opticians help you in selecting the right frame to fit your face comfortably. People usually do not know what to look for in a frame and end up choosing frames that are not appropriate for their prescription or their facial features.Yes, the seg height can be raised either by bringing the nose pads together or by adding a pantoscopic tilt.Eyeglasses ordered under an insurance plan are usually processed by the insurance labs and we do not have much control over it.
What is the difference between plastic (CR-39) and polycarbonate?
The "standard plastic" lenses are often called "Hard Resin", "CR-39 plastic", or just quot;plastic" lenses. CR-39 is actually a PPG Industries registered trade name for a DADC (diallyl diglycol carbonate) polymer that was introduced in 1941. The "CR" stands for Columbia Resin and CR-39 was the 39th batch or formula made by Columbia Laboratories in Ohio.Frames are identified by manufacturer / designer, model number or name, size, and color information. Size information contains the horizontal measurement of each lens in millimeters (i.e. 47) and bridge size (the distance between the lenses) i.e. 18. This information can help you in sizing a frame for your face. To better understand the frame size, double the first number and add the second.
What is cylindrical power?
If there is no value under the cylinder heading, then you have a simple prescription. If there is a value under this heading, then you have astigmatism. Like sphere power, the cylinder power is also measured in diopters.Anisometropia is a condition where there is a significant difference in the refractive errors of the two eyes. If this condition is present in infancy and is undetected or untreated, it often results in the development of lazy eye or amblyopia in the weaker eye. The greater the amount of the difference, the more likely the development of lazy eye will be. A problem can occur when glasses are made for an anisometropic individual.
Can laser eye surgery correct my need to wear reading glasses?
If you have good distance vision without glasses, but need reading correction only, laser refractive surgery is not an option for you. If you wear bifocals to correct both distance and near vision, you may be a candidate to have the distance vision corrected, but still have to wear reading glasses after.A diopter is a unit of measurement that is simply the inverse of the focal distance of the lens as measured in meters.
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