Unlike human children, your pet can’t tell you if he or she is having a difficult time seeing and navigating his or her surroundings, so oftentimes, vision testing is necessary to determine if impairment is present. While signs of vision loss or sight impairment can be difficult to detect, common indicators include clumsiness; bumping into walls, stairs, or furniture; fearful or anxious behavior; difficulty locating food, water, or toys in your home; changes in normal playful behavior; and any discoloration or clouding of the eyes.
Even with these signs, vision testing is necessary to rule out any alternative possibilities for abnormal behavior. By the same token, vision impairment may be a symptom rather than a diagnosis, so further testing may be required to determine the underlying cause of your pet’s changes in vision.