Anyway, I am growing/caregiving for my SO and her mother in a non-medical area of the U.S.
I understand cannabis can be used to relieve pressure in the eyeball (intro-ocular pressure) and was hoping you could direct me to a strain selection which may have a proven track record in relieving this certain ailment.
I thank you for any information given,
The answer is that there is NO cannabis strain that has a proven track record for efficacy in treating glaucoma.
Contrary to popular belief cannabis simply isn't a great agent for relieving intraocular pressure. Yes, it does have some positive effect there for some people (not everyone), and if that's all that were available, it might be better than nothing. But it requires constant dosing to maintain the effect, and that is problematic for all sorts of ways.
The real issue here is that all the studies looking at cannabis and glaucoma were done in the late 1970s and early 1980s, when treatment options were very limited. Since that time, there have been all sorts of new drug classes invented, tested, and proven to work.
Here's the money quote from the biggest Glaucoma advocacy group:
"Advocates of medicinal marijuana cite evidence that hemp products can lower intraocular pressure (IOP) in people with glaucoma. However, these products are less effective than safer and more available medicines. Most research regarding marijuana use took place before some current medications with fewer side effects were available.
The high dose of marijuana necessary to produce a clinically relevant effect on IOP in the short term requires constant inhalation, as much as every three hours.
The number of significant side effects generated by long-term oral use of marijuana or long-term inhalation of marijuana smoke make marijuana a poor choice in the treatment of glaucoma, a chronic disease requiring proven and effective treatment."
May 8, 2007 - Glaucoma Research Foundation
So the answer to your question is that the "drug" you should be using is whichever one your SOs opthalmologist recommends (ie medicated prescription eyedrops).
If your SO wants to use cannabis for OTHER reasons (or maybe other reasons, and hey. ..if it helps the glaucoma, so be it), that's one thing. But relying on it alone to treat glaucoma, is just an unnecessary risk to their eyesight!