I’ve had glaucoma for years. Does your husband have any vision damage or only increased Intraocular pressure?
I took drops for years to lower my pressures. First I used Lumigan/Bimatoprost but it was very expensive so switched to Xalatan/ Latanoprost. Both kept my pressures down.
After I had cataract surgery my pressures remained low without any drops. Although not at first both medications eventually cashed burning, slightly blurred vision and my worst side effect was foreign object feeling. I was insistent there was something in my eye. My Mom also took the same medication but never had the foreign object feeling.
Wishing you both the best of health.