MSD Manual

Please confirm that you are a health care professional

honeypot link
Grass sickness after eye drops, horse
Grass sickness after eye drops, horse
Grass sickness after eye drops, horse

Grass sickness case 20 minutes after administration of 0.5% phenylephrine eye drops into the right eye. Note the change in angle of the eyelashes in relation to the head.

Courtesy of Dr. Caroline Hahn.

In these topics
Equine Dysautonomia