Detecting AMD – the Amsler grid

this image shows the amsler grid used to detect Age related macular degeneration the worlds leading cause of sight loss

 Detecting Age Related Macular Degeneration.

This is the Amsler Grid

Developed by a  Swiss Opthalmologist Marc Amsler, the  amsler grid has been used since 1945 for detecting age related macular degeneration. It is a grid of horizontal and vertical lines used to monitor a person’s central vision. Age related macular degeneration causes the loss of central vision and is the most common cause of sight loss.

The amsler grid  is a diagnostic tool that aids in the detection of visual disturbances caused by changes in the retina and  particularly the part known as the Macular the Epitetinal membrane as well as the optic nerve and the visual pathway to the brain. To someone with normal vision the grid looks as it does above. To someone with age related macular degeneration it looks like the grid below. is an artists impression of how the grid may look but I know of people with age related macular degeneration who have said the window frames are wavy and the pavements come up to meet them.
In the test, the person looks with one eye at a time, at the small dot in the middle of the grid. Patients with AMD may see wavy lines or some lines may be missing.

Amsler grids are available from opthalmologists/opticians and can be found on websites for home testing. You can use this link to download a free grid.Click this link to get your copy of an Amsler Grid.

The original Amsler grid was black and white but there is a colour version with a blue and yellow grid which is more sensitive and can be used to test for a wide variety of visual pathway abnormalities, including those associated with the retina,optic nerve and pituitary gland.

Link to homepage


Enhanced by Zemanta

Award-winning blogger and former care columnist for Devon Life magazine. I am passionate about helping elderly people and people with dementia live purposeful and independent lives.
Designer of the Dementia Assistance Card and Points Of Light award recipient, Caron hopes to help carers when resources are limited and demand is ever-increasing. I am here to support you.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.