paula roman

SIGHT

The sight is a sense and with this sense you can see things, but some persons they can´t see very well and they have  got problems. They use glasses, lenses and also they have their eyes operated .The sight is the sense that we use the most. We see things with the eyes and the eyes have parts, but the most important part is the macula . The macula is the part of the eye that allows you to see fine details .and the others parts also are very important for example  https://www.youtube.com/watch?feature=player_detailpage&v=VIn63OrYHmY 
The iris light increases or decreases .The pupil dilates.The retina is the light sensitive part.Crystal is the part that focuses on gaz light on the retina .
Some persons that have got problems with their sight or even if they are blind they use dogs to help them.Labrador and Golden retriever are good  dogs for this people  , they guide them to walk in the Street to take the bus and they make  them a better live .Normaly when the people get older they lose  part of the sight .There are people with problems like myopia and hyperopia that have got solution wearing glasses or being operated with laser .We blink our eyes to hydrate .The sense of the sight is the most difficult to lose .The eye lens is faster than a camera .