if (entity.getActivePotionEffect(BioWarfarePotionRegistry.InvertedVision) != null) {


				Random randomGenerator = new Random();
				int randomint = randomGenerator.nextInt(20);
				if (randomint == 1) {
					if (entity.worldObj.isRemote) {
						if (GLContext.getCapabilities().OpenGL20 && OpenGlHelper.areShadersSupported()) {

							Method load = null;
							try {

								load = Shader.class.getDeclaredMethod("func_175069_a", ResourceLocation.class);
							}
							catch (NoSuchMethodException e) {
								e.printStackTrace();
							} catch (SecurityException e) {
								e.printStackTrace();
							}

							load.setAccessible(true);
							try {

								load.invoke(Minecraft.getMinecraft().entityRenderer, new ResourceLocation("shaders/post/flip.json"));
							} catch (IllegalAccessException e) {
								e.printStackTrace();
							} catch (IllegalArgumentException e) {
								e.printStackTrace();
							} catch (InvocationTargetException e) {
								e.printStackTrace();
							}
						}

					}
				}
			}