Long and Short Sightedness - The Eye Flashcards
If someone is short sighted what is their problem
they refract light too much so cannot see far
What is it called to be short sighted
myopia
Where does light get focussed for short sighted people when looking far away
too early so doesn’t land on retina
What is the likely problem of someone with myopia
their lens is too fat and curved
What lens should people with myopia get in their glasses and why
They should get convex glasses to refract light outwards and make the fat lens do more work on refracting light
If someone is long sighted what is their problem
they don’t refract enough light so cannot see far
what is it called to be long sighted
hyperopia
where would the light get focussed for long sighted people when looking close
the focus would be behind the retina
what is the likely problem of someone with hyperopia
their lens is too skinnyh
what lens should people with hyperopia get in their glasses and why
concave lens to refract light inwards and make the skinny lens do less refraction on light