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My cat has eye discharge — what now?

Eye discharge can be mild irritation, or a corneal ulcer, or raised pressure inside the eye. The key is whether the eye itself has gone cloudy or white, and whether the cat can open it.

First, how urgent is this?

Go now

  • An eye suddenly clamped shut, streaming, with the cat pawing at it.
  • A cloudy or white eye, or pupils of different sizes.
  • A bulging eye, or clearly swollen lids.
  • Open-mouth breathing, or obvious effort to breathe.

Contact your vet today

  • Yellow-green discharge for several days.
  • A red eye, swollen lids, or tear staining turning the fur dark around the eye.
  • Sneezing or a runny nose at the same time.
  • Falling vision: bumping into furniture, unwilling to jump, walking along walls.

Record and observe

  • A little dark discharge in the corner on waking, clearing with a wipe, with the eye opening normally.
  • A known herpes carrier with brief tearing that settles within a few days.
  • Already under vet care: record the discharge colour and how the eye looks (photos), and bring the record to the next visit.

Before you set off

  • The colour and amount of discharge, and whether one eye or both.
  • Photos of the eye: squinting, redness, cloudiness.
  • Whether the cat paws at the eye, rubs its face or avoids light.
  • Other signs: sneezing, appetite, energy and drinking.
  • A list of medicines and the time of the last dose.
  • Do not use human eye drops or ointment, and do not rinse the eye yourself.

What your vet may ask and do

  • Ask: when it started, and whether one eye or both.
  • Ask: any pawing, light sensitivity or failing vision.
  • Ask: contact with other cats, and vaccination history.
  • Do: a fluorescein stain to check for a corneal ulcer.
  • Do: measure the pressure inside the eye, to rule out glaucoma.
  • Do: examine the lids, lashes and tear ducts.
  • Do: refer to an ophthalmologist, or ultrasound the eye, where needed.

Where to go in Hong Kong

Call the clinic before you drive over, to confirm tonight's arrangements and the location.