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Old 01-22-2006, 04:07 PM   #1
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LaniR304 HB User
What is my vision?

Based off of 20/20, does anyone know approximatley what my vision is if my prescription glasses ar -6.75 (my contacts are -6.00 & -6.25).
Just curious.
Thanks!

 
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Old 01-22-2006, 05:28 PM   #2
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squatchimo HB User
Re: What is my vision?

With your glasses or contacts on, you're probably 20/20 or even 20/15, if that's what you're asking. Without them, I'd guess you're around 20/400 or worse.

 
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Old 01-22-2006, 10:01 PM   #3
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LaniR304 HB User
Re: What is my vision?

Thank you...I was trying to guesstimate what my vision is without some sort of corrective lenses.

 
Old 01-22-2006, 10:07 PM   #4
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LaniR304 HB User
Re: What is my vision?

Thank you...I was trying to guesstimate what my vision is without some sort of corrective lenses.

 
Old 01-22-2006, 10:56 PM   #5
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seriousperson HB Userseriousperson HB User
Re: What is my vision?

Unless I'm mistaken, it's as simple to figure as 20/675. But maybe I'm wrong. Anyone else?

 
Old 01-25-2006, 06:44 AM   #6
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twoeyez HB Usertwoeyez HB User
Re: What is my vision?

LaniR304 : Myopia is commonly detected by reading a Snellen eye chart from a distance of 20 feet. Notations of 20/20, 20/30, or 20/200 are used to measure visual acuity. The Snellen method is adequate for screening purposes to determine visual acuity, but it does not accurately quantify myopia because there are other variables that affect an interpretation of the chart, such as squinting, guessing at blurred letters, and room lighting.

The "power" of a lens placed in front of an eye to correct for myopia is measured in terms of diopters. The table below gives an approximate idea of the vision to expect with varying degrees of myopia:

Myopic Correction, Snellen Visual Acuity

-0.50 20/25 to 20/30 -1.00 20/30 to 20/50 -3.00 20/300 -4.00 20/400 -5.00 20/600 -6.00 20/800 Therefore a -6.25 = approx. 20/850
-6.75 = approx. 20/950

It is important to know your CORRECTED Snellen Visual Acuity IS 20/20. For example, if you have only 20/60 VA with the best possible CORRECTION, then you have VISION LOSS.

Myopia is when corrected to 20/20

Eyes

 
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