They are a symbol of order and intelligence, and a link to making fire for rescue. As they get slowly destroyed throughout the novel (taken, one lens smashed, then stolen) it shows the breaking down of order. However, he is short sighted, so his lenses would not have magnifiedd the sun and therefore not started a fire. In this case Golding has chosen to put symbolism above the reality of the story
Simon retrieved Piggy's glasses for him, after they had fallen onto the rocks as a result of Jack punching Piggy.
In the novel "Lord of the Flies" by William Golding, Piggy's glasses are broken when Jack slaps him, causing the glasses to fall off and shatter. The breaking of Piggy's glasses is symbolic of the deterioration of order and civilization on the island.
Simon
First Jack drops them and ends up breaking a lens, then toward the end of the book Jack's group comes and takes them.
jack has taken everything from everyone already so why would he have to take glasses that wont help him in anyway.
Piggy's glasses symbolise technology and science, they are also an outward indication of Piggy's intelligence. The glasses are the technology which provides the boys with fire. Piggy's spectacles are also the means by which Piggy is able to see clearly, both in reality and metaphorically.
They decide to let the fire go out at night and light it again in the morning
moi
Jack steals Piggy's glasses because he sees them as a valuable resource needed for making fire, which he believes will help him gain power and control over the group. In his pursuit of dominance, he disregards Piggy and the consequences of his actions.
Typically, small tulip-shaped glasses like snifters or stemmed glasses are used to serve after-dinner liqueurs. These glasses are designed to concentrate the aromas of the liqueur, allowing the drinker to fully appreciate its flavors and complexities.
Kermit the Frog
give one bottle to the bartender