Eye

int steps = 100;
float theta;
float radius = 200;
float x, y, x2, y2, ox, oy;
float inner_noise, outer_noise;
color bg = #000000 ;
color f = #ffffff;

void setup() {
  size(500, 500);
  background(bg);
  stroke(f);
  ox = width/2;
  oy = height/2;
  frameRate(20);
  strokeWeight(2);
}

void draw() {
  fill(bg, 20);
  rect(0, 0, width, height);
  drawCircle();
}
void mouseClicked() {
  setup();
}

void drawCircle() {
  for (int i=0; i<steps; i++) {
    inner_noise = random(100, 150);
    outer_noise = random(20, 70);
    x = ox + cos(theta)*(radius-outer_noise);
    y = oy + sin(theta)*(radius-outer_noise);
    x2 = ox + cos(theta)*(radius-inner_noise);
    y2 = oy + sin(theta)*(radius-inner_noise);
    stroke(f, 100);
    stroke(f);
    line(x, y, x2, y2);
    theta += TAU/steps;
  }
  fill(bg);
  noStroke();
  ellipse(ox, oy, 80, 80);
}