Chapter 13- Introduction to low vision Part 1 (2) Flashcards
Name the types of magnifiers
1- Spectacle magnifiers
2- Illuminated hand held magnifiers
3- Non- illuminated hand held magnifiers
4- Illuminated stand magnifiers
5- Non- illuminated stand magnifiers
6- Bar magnifier
7- Flat field magnifier
8- Telescopes
What magnifier is this?
Spectacle magnifiers
What are the advantages of a spectacle magnifier?
1- Hands free
2- Large Field of view
What are the disadvantages of a spectacle magnifier?
1- Short working distance
2- May be heavy
What activities can a spectacle magnifier be used for?
1- To read a book
2- To watch television
What magnifier is this?
Hand- held magnifier
What are the advantages of a hand held magnifier?
1- Cheap
2- Can be used at any distance from the eye
What are the disadvantages of a hand held magnifier?
1- Not good if hand tremor present
2- Only best suited for short duration tasks
What activities can a hand held magnifier be used for?
1- Reading a prescription
2- Writing your signature
What magnifier is this?
Stand magnifier
What are the advantages of a stand magnifier?
1- Both hands are available to use
2- Stable
What are the disadvantages of a stand magnifier?
1- Might be difficult to read a book because of the hump caused by the binding
2- Difficult to perform tasks underneath at high powers
What activities can a stand magnifier be used for?
1- Sewing
2- Reading a newspaper
What magnifier is this?
Telescope
What are the advantages of a telescope?
1-Auto focus available
2- Can incorporate patient’s prescription
What are the disadvantages of a telescope?
1- Expensive
2- Poor field of view
What activities can a telescope be used for?
1- Looking at a picture
2- Reading a prescription
What magnifier is this?
Flat field magnifier
What magnifier is this?
Bar magnifier
