EYEGLASSES

ON THIS PAGE:
• Prescription for "Regular" Glasses
• Prescripton for Computer Glasses
• New Bi-Focal scrip for Reg & Computer Glasses
• Pupillary Distance
• General Information
• Frame Size
• Miles Scrip
• Brobinson Scrip
• Tint Chart
• Links


PRESCRIPTIONS:

MAIN Prescription for "REGULAR" Full-Strength Glasses:
SPECTACLE Rx
 
SPH.
CYL
AXIS
PRISM
ADD
OD
-4.25*
-0.50*
105
-
-
OS
-4.00*
-0.75*
85
-
-
P.D. = 63mm

Prescription for (non-bifocal)
COMPUTER GLASSES:
SPECTACLE Rx
 
SPH.
CYL
AXIS
PRISM
ADD
OD
-2.75*
-0.50*
105
-
-
OS
-2.50*
-0.75*
85
-
-
P.D. = 63mm

Prescription for BI-FOCALS Based on REG & PC Scrips:
SPECTACLE Rx
 
SPH.
CYL
AXIS
PRISM
ADD
OD
-4.25*
-0.50*
105
-
+1.50
OS
-4.00*
-0.75*
85
-
+1.50
P.D. = 63mm

*SPH & CYL typically written without decimals or zeros, e.g.:"-275" & "-75"
OD=Right eye - OS=Left eye


NOTE: the "ADD" figure makes this a "bifocal" prescription:

  • The "SPH" figure is for your FULL DISTANCE VISION
  • The "ADD" is added to the SPH for the "reading glasses" lens.
To get SINGLE-VISION glasses of your computer scrip, you need to do the math to the SPH and leave the "ADD" blank. Adding a POSITIVE "ADD" figure to a NEGATIVE "SPH" figure, of course, is as if you're subtracting the ADD figure from the SPH, to wit:
(-4.00) + (+1.50) = (-2.50).


PUPILLARY DISTANCE: PD

PUPILLARY DISTANCE
To measure your PD:

  1. Place the millimeter ruler on the bridge of your nose.
  2. Have a friend face you about arms length away.
  3. Have your friend measure the distance between the center of your pupils (the black dots in the middle of your eyes).
  4. (Or you can do it yourself simply by looking in the mirror).
As a guideline:

Most adults' PD's are between 55-65.
Most kids' PD's are between 42-54.
From: http://www.39dollarglasses.com/step2.html

PD is given as "Distance PD" and "Near PD" such as 63/60.

• Distance PD is when you are looking straight ahead.
• Near PD is when you are looking close.

When you look close your eyes turn in, so the near PD is always less than your distance PD. Each eye can also be measured individually. This is called a monocular PD. It would be expressed as 31/30 or 31/31 depending on your symmetry and facial feature.

A good prescription should always have PD written in the first place and you've the right to ask for it, if it's not written in your prescription.


EYEGLASSES: GENERAL INFORMATION

http://www.hbutz.com/wwwboard/messages/201.html

• PD - PUPILLARY DISTANCE. (Part of the prescription data). It takes a minimum of three numbers to obtain eyeglasses:

  • Power of left lens,
  • power of right lens,
  • and your PD.
The guy with the ruler records your PD - and never tells you what is. Your doctor will not write it on your prescription. Your PD never changes as an adult, no matter how bad your eyes get. When you konow your PD, You can order glasses from any lab of your choice, including mail-order labs: Knowledge is power.

• "Prescription life" is less than two years... so labs can force you to buy new eyeglasses every two years.

I finally had enough. I went to Lenscrafters and asked for my old prescription. He referred me to the doctor in the back. It's been ten years, so my prescription was not in the computer. They told me that although I had purchased eyeglasses in the past, they had read the prescription off my old pair - which they "don't do anymore."

I asked them to read it off my current glasses & write it down. They protested: They wouldn't do it, nor would they give me a prescription which I could fill anywhere. They kept pressing, asking why I needed those numbers. I made up a story that I was shopping for scuba goggles, which satisfied one lab technician enough to scratch down the numbers on a piece of scrap paper.

By this time, five people were surrounding me, all confronting me about obtaining a new prescription, getting an eye exam, questioning my motivations for coming in. I took my precious information and ran out the door, less confident in my quest for simply changing my frames.

Using Photoshop, I forged an eyeglass prescription form and inked in my own PD, as well as the prescription from my last pair of glasses. I printed it on card stock and copied the name and phone number of a local optometrist, text color in dark blue with black graphics.


You have a legal right to obtain your eyeglass prescription from your eyecare professional. Request your prescription at the time of your eye examination or request it later, it's your right.

You've the right to have your PD to be written on the prescription.
http://ezinearticles.com/?Understanding-Your-Eyeglass-Prescription&id=473762


• LENSOMETER: "Your current glasses are accurately evaluted using a lensometer." - http://superioreyecare.net/Services.html

http://www.visionsource-clearvisionoptometry.com/index.cfm?fuseaction=site.Services
• "Lensometer: Measures your current prescription in your glasses to be compared to your new prescription."
[Use this as a way to get them to write down your current glasses' prescription - rj]

http://wurm.laughingsquid.net/es/bbs/threads/16.html
• "...the 70's and 80's frames made it very easy to be a human lensometer because they stuck out far enough from the cheeks that I could always guess what they were..."


FRAME SIZE

REFERENCE SIZE:
• Italian frames: FRAME WIDTH: 121mm (133 w/hinges); Lens width: 53mm; Height: 45mm; Bridge 15mm;
• Current regular frames: FRAME WIDTH: 129mm (144 w/hinges); Lens width= 54mm; Height: 49; Bridge 18mm;


Miles Prescription
SPECTACLE Rx
 
SPH.
CYL
AXIS
PRISM
ADD
OD
-5.25
-0.50*
105
-
-
OS
-5.25
-0.75*
85
-
-
P.D. = 63mm


BRobinson Prescription
SPECTACLE Rx
 
SPH.
CYL
AXIS
PRISM
ADD
OD
-2.00
+1.50*
15
-
-
OS
-0.25
+1.25*
170
-
-
P.D. = "63mm" (pending measurment)

Tint Chart For Zenni

 
10%
 
50%
80%
Gray                   
Green                   
Amber                   
Blue                   
Purple                   
Pink                   
Yellow                   

LINKS

• Google: duplicate "current eyeglasses"
• Google: lensometer "your glasses"
• Google: "SPH" CYL AXIS PRISM "ADD * is" ~glasses prescription
• Google: Online Glasses that Read your old Glasses' Prescription

INFO SOURCES:

• opticalworld.wordpress.com/2007/01/25/how-to-read-an-eyeglass-prescription/
• Online Glasses - Send old glasses, they read the prescription - www.eyeglasses.com
• Online glasses - send old glasses...(check end of para. 1) - www.prismoptical.com

BUY ONLINE GLASSES

• $39 Glasses - www.39dollarglasses.com

ZENNI OPTICAL
(anti-reflective/radiation coating $4.95; clip-ons $3.95)

• Zenni Home Page
• Zenni Log In Page

New Links
(NEW WEBSITE IS PAINFULLY SLOW. THESE ARE SOME DIRECT LINKS THAT WILL SAVE SEARCHING TIME. The older links below this may not work & will be replaced as I can find them)

• List: $6.95 page
• List: $9.95 Page
• List: $6.00 thru $10.00 Page


- - - (END "ZENNI" SECTION) - - -

LBW EYEWEAR - Home Page - From $9.99. Similar to "Zenni", options cost more.


SWIMMING GOGGLES

• SWIM GOGGLES - $24 - Have to create an account -www.aquagoggles.com
• SWIM GOGGLES - $30 - No Tint - www.aclens.com
• List of Goggles & Prices - sortprice.com (like "nexTag")
• GOOGLE: SWIM GOGGLES


• Messageboard: "Cheap glasses by mail"; http://forums.slickdeals.net
• Same Messageboard: "Cheap SWIM GOGGLES by mail"

• Natural Vision Improvement - http://www.geocities.com/simplyvision/index.html