One constricted pupil versus a dilated pupil on the opposing eye (anisocoria) is a classic sign.
Uneven Pupils
Internal nictitating membrane visibility as inner corner pink lining from a sunk eyeball.
Apparent 3rd Eyelid
Concave or deep set abnormal eye positioning within the socket.
Sunken Eye Appearance
Fold over curved ear tips on just one side indicates peripheral nerve damage.
Droopy Ear Tips
Lagging blink rates ties to impaired normal tear production.
Decreased Eye Blinks
Puckered nose leather and nasal planum from poor nerve input.
Nasal Dryness
Delayed/weak vision loss driven pupil adjustments to direct light confirms dysfunction.
Reaction Lag