Are you supposed to combine lotanoprost and dorzalamide for glaucoma. my grandpa says take dorzalamide 30 minutes before taking lotanoprost.?

Glaucoma: If both eyedrops have been prescribed for glaucoma, take them 10 minutes apart. After each drop goes in, close eyes for 5 minutes to let the drop soak into the eye.

Follow Dr advice: Latanaprost is a once daily medication, usually instilled before bed, to treat glaucoma! it can be combined with other classes of drops (dorzolamide, brinzolamide, timolol and others) which also combat glaucoma via different mechanisms. It is inadvisable to use the drops close enough together such that one is washed out by the second. Minutes between should be enough.