//Photochromatic tip
var Tip_274 = 'Photochromatic Lenses
Photochromic lenses are light-adjusting lenses which react to sunlight. They are ideal if one wants to combine sunglasses and prescription glasses in only one pair. Also, they already have built-in UV protection in them.';
var Tip_270 = 'Hard coating
Anti scratch coating is imperative for all lenses and EyeBuyDirect recognizes the importance of protecting the lenses from outside factors that might damage or scratch the lens itself. That\'s why all of our lenses come with the Anti-Scratch Coating free of charge in order to provide our customers with a very reliable and a very long lasting pair of lenses.';
var Tip_271 = 'Anti reflective
This option reduces distracting reflections of the glasses themselves, particularly important while driving and computer use.';
var Tip_272 = 'UV Coating
Another lens treatment that is beneficial but invisible to the naked eye is ultra-violet (UV) protection. Just as we use sunscreen to keep the sun\'s UV rays from harming our skin, UV treatment in eyeglass lenses blocks those same rays from damaging our eyes. Over exposure to ultraviolet light is thought to be a case of cataracts, retinal damage and other eye problems. An ultra-violet treatment is simple and quick to apply to most plastic eyeglass lenses, and it does not change the appearance of the lenses at all.';
var Tip_273 = 'Sunglass tints
A variety of colors can be added to your lenses to produce sunglasses. Prescription sunglasses are a great buy for summer, avoiding the heavy weight of clip-ons.';
var Tip_275 = 'Single vision 1.5 (Free)
These lenses are our conventional lenses, having a refraction index of 1.5. They are the standard ones when it comes to getting the simpliest and most basic of eyeglasses. It has defined eyeglasses ever since it was invented and EyeBuyDirect packages all of our frames with these pair (Single Vision Prescription Lenses) included in the frame price. Most suitable for prescriptions of SPHERE (-5.00 to +3.00) and CYLINDER (-3.00 and below)';
var Tip_276 = 'Thin and Lite
These are one of our high index lenses with a refractive index of 1.57. High index lenses can reduce the thickness of the lenses of high powered prescriptions. At the same time, they make the lenses lighter and more comfortable to wear, eliminating the "bug-eye" look of conventional lenses. The Thin and Lite (1.57 index) lenses are recommended for prescriptions of : SPHERE (-5.00 to +4.00) and CYLINDER (-3.00 and below)';
var Tip_277 = 'Super Thin
These are one of our high index lenses with a refractive index of 1.6. High index lenses can reduce the thickness of the lenses of high powered prescriptions. At the same time, they make the lenses lighter and more comfortable to wear, eliminating the "bug-eye" look of conventional lenses. The Super Thin (1.6 index) lenses are recommended for prescriptions of : SPHERE (-5.00 to +6.00) and CYLINDER (-4.00 and below)';
var Tip_338 = 'Ultra Thin
These are one of our high index lenses with a refractive index of 1.67. High index lenses can reduce the thickness of the lenses of high powered prescriptions. At the same time, they make the lenses lighter and more comfortable to wear, eliminating the "bug-eye" look of conventional lenses. The Ultra Thin (1.67 index) lenses are recommended for prescriptions of : SPHERE (-6.00 to +7.00) and CYLINDER (-5.00 and below)';
var Tip_339 = 'As Thin as possible
These are one of our high index lenses with a refractive index of 1.74. High index lenses can reduce the thickness of the lenses of high powered prescriptions. At the same time, they make the lenses lighter and more comfortable to wear, eliminating the "bug-eye" look of conventional lenses. These (1.74 index) lenses are recommended for prescriptions of : SPHERE (-6.00/+7.00 and above) and CYLINDER (-5.00 and below)';
var Tip_278 = 'Bifocal glasses
Bifocal lenses provide a distinct separation between the Distance (see Far) and the Reading part (see Near) of the glasses via a segmented half-shaped circle on the bottom part of the lenses. For these type of lenses, the PD (Pupilary Distance) measurement is very important to ensure that the center of vision is placed correctly on the lenses.';
var Tip_279 = 'Progressive or Varifocal glasses
Progressive lenses are similar to Bifocal lenses, having two partitions - the Distance and Reading portions. However, there is no visible line to distinguish the partitions. Though having two magnifications on them, they look more like a pair of Single Vision lenses.';
var Tip_280 = 'SPH or Sphere:
SPHERE power; the overall power
CYL or Cylinder:
CYLINDER power\; the amount of astigmatism
Axis:
this measurement refers to the direction of the astigmatism. X 90 means AXIS 090
CYL or Cylinder:
CYLINDER power\; the amount of astigmatism';
var Tip_38 = '38
';
var Tip_37 = '37
';
var Tip_36 = '36
';
var Tip_283 = 'Near PD
Near PD is used in progressive and bifocal lenses, near PD is for near vision purposes and usually shorter in distance from the Distance PD by 2mm \- 5mm in measurement due to the eyes turning in at near distance.';
var Tip_282 = 'Optical Centers / Pupillary Distance (PD)
Pupillary distance or PD is the distance from the center of the pupil in one eye to the center of the pupil in the other eye.
If you do not have the PD, you can measure it as shown below:
';
var Tip_281 = 'SPH or Sphere:
SPHERE power; the overall power
CYL or Cylinder:
CYLINDER power\; the amount of astigmatism
Axis:
this measurement refers to the direction of the astigmatism. X 90 means AXIS 090
CYL or Cylinder:
CYLINDER power\; the amount of astigmatism';
var Tip_336 = 'single vision
These are the most basic types of lenses and have only one magnification throughout the entire lens. They can be processed for Distance (to see Far), Reading (to see Near) or for Computer Work (Intermediate).';
var Tip_SPH = 'SPH or Sphere:
SPHERE power; the overall power';
var Tip_CYL = 'CYL or Cylinder:
CYLINDER power\; the amount of astigmatism';
var Tip_Axis = 'Axis:
this measurement refers to the direction of the astigmatism. X 90 means AXIS 090';
var Tip_ADD = 'ADD:
is an abbreviation for "near vision". This may represent a single-vision lens prescription to improve near work, or the reading portion of a bifocal lens. Some prescription forms use "ADD" in place of "N.V." with a single box to indicate the additional refractive power to be added to the spherical of each eye.';
var Tip_Polycarbonate = 'Polycarbonate Lenses
Polycarbonate lenses are thinner and lighter than traditional plastic eyeglass lenses. They also offer 100 percent ultraviolet (UV) protection and are up to 10 times more impact-resistant than regular plastic lenses.
This combination of lightweight comfort, UV protection and impact resistance makes polycarbonate lenses an excellent choice for children\'s glasses, sports eye wear and safety glasses.';
var Tip_usefor = Tip_336 + '
' + Tip_278 + '
' + Tip_279;