Irritation and Itching
The most common cause is Allergic conjunctivitis if redness is also there, for which you require Anti Histamine eye drops or anti allergic drops or any anti-inflammatory eye drops.
At times this can be self resolving without any medication.
Gentamycin is a broad spectrum antibiotic which kills bacteria but doesn't decrease itching specifically.
Most common Causes of Itching with irritation without redness are:
- Dry eye ( decreased lubrication of eye)
- Early Allergic conjunctivitis
- Computer vision syndrome (UV light damages corneal epithelium)
Feel free to follow up:)
Hope it helps :)