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[Music]

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Hello, my little lights
of the future.

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Hello Dr. O.D.!

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Today, we're going
to talk about

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a very important aspect
of vision:

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stereoscopy, or
three-dimensional (3D) vision.

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Watch the board!

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stereoscopy is what's commonly
referred to as 3D vision.

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3D vision enables children
to perceive depth,

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and it assures us that their
eyes are working well together.

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To get an idea of what
3D vision is,

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think of the cinema
and 3D movies.

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We put on special glasses,
so that we can see

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characters or objects in relief.

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At a vision screening,
optometrists use the Titmus test

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to check children's stereoscopy.

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Children are asked
to wear glasses,

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similar to those at 3D movies,

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and to point to the animals
that appear to stick out.

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That's all for stereoscopy!

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In closing, remember
that in Quebec,

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eye tests are free for
children up to age 17.

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Stereoscopy (3D Vision)
Signs and Effects

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A decrease or loss of
three-dimensional vision

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can have an impact on learning.

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Children may show signs


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such as working with
one eye closed,

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or holding a hand over one eye

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to better see the elements
of the task at hand.

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In younger children, these
signs may be observed

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when they are playing
with building blocks

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or performing tasks such
as threading or cutting.

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These children may appear
clumsy, have poor balance,

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hesitate when going from
one place to another,

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be fearful of stairs,
and be less active

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in the schoolyard or gym.

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Did you understand why
good 3D vision

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is so important?

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Yes, Dr. O.D.

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So now you can better
understand why,

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before starting school,
an eye test...

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...is always best!