Guinea pigs do not generally close their eyes nor do they blink. In fact, guinea pigs often sleep with their eyes closed. For this reason, you may have noticed a milky white substance coming from the eyes on a routine basis. This acts as a lubricant to keep the eyes moist. A guinea pig’s eyes are pretty unique and so are the illnesses or injuries that can affect them. If you ever notice something off about your guinea pig’s eyes, please call your vet right away. One type of eye condition is known as Entropion. This is a condition that happens when the guinea pig’s eyelash turns and causes an irritation to the eye. Over time the eye can ulcerate with a milky white coloring that is noticeably different from the secretion that lubricates the eyes. For more details, call your pet clinic San Antonio TX.