Tag: long sighted

Flat glasses

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Have you ever noticed how eyes look behind glasses and how the glass catches the light?

I just watched an old film called “flight of the phoenix”. The actor playing an engineer wears glasses, but as it’s a desert location the sun is very bright. Every so often his glasses glint. But you can see it’s a flat surface, no curve on the glass. That means they are not assisting his vision. Also his eyes are a normal size behind the glass. He is clearly using them as a prop to indicate his intelligence.

You can tell how short or long sighted people are by looking at the faces through the glasses. Short sighted people’s eyes look smaller behind their glasses. Also if you look where the edge of their face sits behind the lens the face will appear to go inwards and not line up with the face edge above and below the glasses frame.

Long sighted people’s glasses look different. Their eyes look larger. The side of there face is wider behind the glasses. Almost extending out beyond the spectacles lens.

These amounts vary depending on how good or bad their eyesight is. I don’t know when I noticed all of this, but I think it goes back to seeing flat lenses in a film…

I forgot the arm!

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How would these stay up?

I’ve made an ‘armless’ sketch of big glasses. I was just trying out some textures in my sketchbook app.

Do you know you can tell if someone is short or long sighted depending on whether their eyes look bigger (long sighted) or smaller (short sighted). That is dependent on the convex or concave nature of the lenses in their glasses.

If you are very short sighted your eyes will look smaller than if you are only mildly affected. It also depends on whether your spectacle lenses are made of glass or plastic.

If you ever watch a TV programme or film with an actor wearing glasses then look at the lenses. If the light catches them you can see if the glass is flat, then you know they don’t really need glasses!

Short or long sighted?

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How can you tell whether someone is short or long sighted? Look into their eyes.. Short sighted peoples eyes look smaller behind their glasses. Long sighted people appear to have larger eyes than normal… If you watch a film and the star of it is wearing glasses you can tell if they need them. Sometimes they wear glasses with a flat piece of glass in them, you can see a ‘flat’ reflection if the light hits them. You can tell they are only wearing glasses for effect rather than any real need.

Eyes

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I was just talking about drawing glasses and how eyes look behind them and decided to do a sketchy diagram. I am drawing with my finger so the pictures are a bit wobbly….

When you draw the eye behind the glasses, always look to see if the face and eye look bigger or smaller. You can tell if they are long sighted (bigger) or short sighted (smaller). It makes it more realistic if you notice this sort of thing. If the eyes are the same as normal it means the glass is flat in the lens, not curved!

There is a film staring James Stewart called flight of the phoenix. One of the characters wears glasses. But the lenses are flat and the light glints off them like window panes!