[How the Eye Works] Hyperopia | Can you see well in the distance?

Last time,
we talked about "myopia," where the focus falls in front of the retina.

So, conversely,
is it possible for the focus to shift behind it?

Is someone with hyperopia someone who can see far away?

People with myopia are "people who can see nearby,"

so, are people with hyperopia "people who can see far away"?

That's the image people often have, isn't it?

However, inside the eye,
the focus is behind the retina.

Where is the focus aligned?

Inside the eye, light entering from a distance is focused
on the retina, allowing us to see clearly.

I mentioned that this is called "emmetropia."

In contrast, if
the focus is behind the retina,
it is not aligned at the position of the retina,
resulting in a blurry image.

This is "hyperopia (farsightedness)".

Taking a look inside the eye

This is an image of looking at the eye gently from the side.

Then why can they still see?

However, even people with hyperopia
can sometimes see.

This is because
they adjust the focus position slightly forward inside the eye,
using their own strength to align it with the retina.

Therefore, at first glance,
it may appear that there is no problem.

It is often difficult to notice yourself, but

inside the eye, it might be in a state of
working a little hard to maintain focus.

*This function is called "accommodation."
I will talk about this in another session.

This is what we look for during the examination

With hyperopia,
even if it feels like you can see well,
your eyes are constantly adjusting their focus.

During the examination, we check for that state
as well.

If you have any concerns,
please feel free to send them via Marshmallow👇