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Swimming Underwater Without Goggles
Swimming Underwater Without Goggles
When I was young I remember sometimes I could go under the water and
open my eyes and be able to see things around me without any
discomfort. Unfortunately I rarely go swimming anymore and I never
take baths (only shower) so I didn't get a chance to test this out
again.
Is this the same for everyone? And if so, why do people wear goggles
when they go swimming?
When I was young I remember sometimes I could go under the water and
open my eyes and be able to see things around me without any
discomfort. Unfortunately I rarely go swimming anymore and I never
take baths (only shower) so I didn't get a chance to test this out
again.
Is this the same for everyone? And if so, why do people wear goggles
when they go swimming?
Re: Swimming Underwater Without Goggles
On Thu, 15 May 2008 01:52:18 -0700 (PDT), Zetsu
<absolutelyinvincible@hotmail,com > wrote:
>When I was young I remember sometimes I could go under the water and
>open my eyes and be able to see things around me without any
>discomfort. Unfortunately I rarely go swimming anymore and I never
>take baths (only shower) so I didn't get a chance to test this out
>again.
>
>Is this the same for everyone? And if so, why do people wear goggles
>when they go swimming?
My grand daughter who is four swims underwater with her eyes open. I
have observed here with my face mask on. She said she saw fish and
turtles so she can probably see. She said her eyes hurt, this was
probably because we were swimming in the ocean. I don't open my eyes
under water because of a fear of it that I have.
On Thu, 15 May 2008 01:52:18 -0700 (PDT), Zetsu
<absolutelyinvincible@hotmail,com > wrote:
>When I was young I remember sometimes I could go under the water and
>open my eyes and be able to see things around me without any
>discomfort. Unfortunately I rarely go swimming anymore and I never
>take baths (only shower) so I didn't get a chance to test this out
>again.
>
>Is this the same for everyone? And if so, why do people wear goggles
>when they go swimming?
My grand daughter who is four swims underwater with her eyes open. I
have observed here with my face mask on. She said she saw fish and
turtles so she can probably see. She said her eyes hurt, this was
probably because we were swimming in the ocean. I don't open my eyes
under water because of a fear of it that I have.
Re: Swimming Underwater Without Goggles
"Zetsu"
> When I was young I remember sometimes I could go under the water and
> open my eyes and be able to see things around me without any
> discomfort. Unfortunately I rarely go swimming anymore and I never
> take baths (only shower) so I didn't get a chance to test this out
> again.
>
> Is this the same for everyone? And if so, why do people wear goggles
> when they go swimming?
I was told that "can swim" means swimming with open eyes. You must see what
is around. All swimmers did. Goggles are a modern invention. With goggles is
more comfortable.
S*
"Zetsu"
> When I was young I remember sometimes I could go under the water and
> open my eyes and be able to see things around me without any
> discomfort. Unfortunately I rarely go swimming anymore and I never
> take baths (only shower) so I didn't get a chance to test this out
> again.
>
> Is this the same for everyone? And if so, why do people wear goggles
> when they go swimming?
I was told that "can swim" means swimming with open eyes. You must see what
is around. All swimmers did. Goggles are a modern invention. With goggles is
more comfortable.
S*
Re: Swimming Underwater Without Goggles
Zetsu wrote:
> When I was young I remember sometimes I could go under the water and
> open my eyes and be able to see things around me without any
> discomfort. Unfortunately I rarely go swimming anymore and I never
> take baths (only shower) so I didn't get a chance to test this out
> again.
>
> Is this the same for everyone? And if so, why do people wear goggles
> when they go swimming?
I'm surprised nobody has mentioned clearer vision!
The eye is focussed for air as a medium.
In water, the refraction at the cornea is almost nil (plus or minus a
little, between fresh and salt water, I suspect), so you only have about
half the diopter power as normal. You'd need +10 contacts to come close
to normal. By interposing an air space, and having a plane surface for
the air-water interface, your eyes are once again surrounded by the
proper refractive index medium, and you can see well.
Ray's granddaughter probably has a child's far better adaptive range,
and her lens can fatten up enough to get fair vision...
Dave
Zetsu wrote:
> When I was young I remember sometimes I could go under the water and
> open my eyes and be able to see things around me without any
> discomfort. Unfortunately I rarely go swimming anymore and I never
> take baths (only shower) so I didn't get a chance to test this out
> again.
>
> Is this the same for everyone? And if so, why do people wear goggles
> when they go swimming?
I'm surprised nobody has mentioned clearer vision!
The eye is focussed for air as a medium.
In water, the refraction at the cornea is almost nil (plus or minus a
little, between fresh and salt water, I suspect), so you only have about
half the diopter power as normal. You'd need +10 contacts to come close
to normal. By interposing an air space, and having a plane surface for
the air-water interface, your eyes are once again surrounded by the
proper refractive index medium, and you can see well.
Ray's granddaughter probably has a child's far better adaptive range,
and her lens can fatten up enough to get fair vision...
Dave
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