I've been treating one of our cats with eye drops for the past few weeks for herpes infection. She had been blinking her eyes for weeks, never really opening them completely. At first the vet treated her for conjunctivitis, then suggested allergies. But a second opinion led to the herpes diagnosis, since she had the virus as a kitten. The drops are really helping...but catching her to give them to her FOUR TIMES A DAY is no fun!