TL;DR: Squinting in dogs is a sign of ocular pain that requires a veterinary exam within 12 to 24 hours. Seek immediate care if the eye is cloudy, bleeding, or if your dog is pawing at it to prevent permanent vision loss.
What does it mean if my dog is squinting or keeping an eye shut?
When a dog squints or keeps an eye tightly shut, it is medically known as blepharospasm. This is a primary sign of ocular pain. Because the cornea is packed with sensitive nerve endings, even a minor irritation can cause a dog to clamp the eyelid shut to protect the globe. Common causes range from a simple foreign object like a grass seed to more serious conditions like corneal ulcers, uveitis, or glaucoma.
Is it an emergency if my dog starts squinting and how quickly should they be seen?
- Urgency Level: Medium. While squinting is not usually an immediate life-threatening emergency, it is considered a "medical priority" because eye conditions can deteriorate within hours.
- Recommended Timeline: You should aim to have your dog seen by a veterinarian within 12 to 24 hours.
- Immediate Action Required: Seek urgent care immediately if the eye appears cloudy, is bleeding, or if the dog is pawing at it incessantly to prevent permanent vision loss.
How does providing a photo of my dog's eye help with the triage process?
- Faster Assessment: A clear image allows the vet to look for signs of swelling, discharge, or visible foreign bodies without needing to immediately touch the painful area.
- Diagnostic Insight: It helps the clinical team determine if the issue is on the surface of the eye or deep within the ocular structure.
- Scheduling Priority: High-quality visuals allow the staff to prioritize your appointment appropriately based on the severity of the condition.
Clinical Context (Merck Veterinary Manual)
In dogs presenting with a tightly shut left eye and squinting, potential causes include orbital cellulitis, corneal lacerations, and eyelid lacerations. Orbital cellulitis is characterized by acute pain on opening the mouth, eyelid swelling, unilateral prolapse of the nictitating membrane, forward displacement of the globe, and conjunctivitis. Corneal lacerations require immediate apposition with sutures, possibly with adjunctive third eyelid flaps or temporary tarsorrhaphy, followed by topical and systemic antibiotics, NSAIDs, and mydriatics to control secondary iridocyclitis. Eyelid lacerations, especially those involving the lid margin, demand precise apposition to prevent long-term defects; larger breeds may require a two-layer closure. A B-scan ultrasonography may be needed if a direct examination of the entire eye cannot be performed.
Chapter: Ophthalmology, Surgery
Source: The Merck Veterinary Manual, 11th Edition (Page 504)