Muscle knots in the Splenius Cervicis are typically found along the side and back of the base of the neck. Muscle knots can refer pain to the side of the neck, the back of the head, and even around the eye, sometimes causing symptoms like blurred vision or a sensation of pressure behind the eye. This referred pain pattern can also contribute to a stiff neck and limited head rotation, especially when combined with tension in nearby muscles like the levator scapulae.