Mom complains of white strips in her vision but opthamologist ruled out retinal detachment

Updates from original post. Mom says the lines are straight and form a V or fan shape from bottom up. They do not totally cut off her vision as she can see through them. She says they are there all the time, but then says she cannot see them the next. When she reads, she closes that eye.
I am wondering if the problem is with her prism glasses.
She is going to see the opthamologist soon to see if her glasses need adjustment for reading even though they are adequate for distance.
As mom is on hospice for her heart, we cannot do too much outside of maki g her comfortable, including eye drops 4 times a day for dry eyes.

In the last couple years my migraines have The added Symptom of visual disturbance. I cannot read when I get these.

I do not get straight white lines, for me, it looks like trying to see through a windshield that has water streaming down it. A word will be in focus for a moment or two, then obscured again.

if you treat Mum’s headache do the lines go away?

I turn to audiobooks when it is a bad day. Perhaps that is an option for Mum? I read when I can, then switch to the audiobook copy when I cannot read.

Geaton, thanks for that suggestion.  I see I'm not the only one who wasn't particularly satisfied with one doctor's apparent lack of interest.  

I wonder if there's so much divergence in specialties that some doctors just don't want to focus on anything but their own specialties.   At least with physical body medicine there could be some overlaps, but with eyes, that could be a different story.

NewandTrying, I'm assuming the cardiac doctor felt that the carotid blockages were causing the shapes and blocked vision?   Sounds like that doctor had good insights.   That could explain why I was asked before I had cataract surgery if I had any cardiac issues.    I hadn't even thought of it as I was initially too nervous about cataract surgery.   

Good information to share; thanks for that.

My mother complained of colored shapes and blocked vision in one eye. Ophthalmologist found nothing. Doctor ordered a carotid ultrasound and found some blockage (50-69%). Mom was put on Plavix and has not had a problem since.

My 90-yo mom's experience was that after cataract surgery she was having issues and the surgeon just didn't seem motivated to solve her problem, and my mom felt it was due to her age. We just so happen to live near the Whiting Clinic, where Dr. Whiting is one of the most experienced Lasik docs in the US (not that we were seeking Lasik but just a very reputable doc). He was an awesome listener and their clinic did an amazingly thorough job of checking out her issues. She is going to have a Lasik procedure for one issue so she can read better, but then he recommended her to a specialty eye clinic for her other issues, and we've had success there as well.

Judy, if you live near a University or have access to a specialty eye clinic, you can also look there to pursue your mom's issue. As GardenArtist suggested too, you might just need to find a doc that acts like they want to solve the problem.

Judy, are these strips vertical, horizontal, in the front of her vision, or at the side?  Do they occlude her vision when they occur?    How long do they last?

I haven't had that exact experience but I have had rolling "blobs" (for lack of a better term) rolling down the outside of each of my eyes, only at certain times of the day and in certain positions.

I gave up on my ophthalmologist, who is primarily focused on surgery.   I had an exam with an optometrist, and found her much, much more interested in addressing the issue.   Unfortunately, she didn't know specifically what causes these rolling blobs.   She also noticed a black spot which no one in the surgical practice addressed.

She asked about headaches, which I've had, but very strange ones lasting perhaps only a minute or so, and angling down toward my eyes.  I call them devil headaches, since they're located where horns would be.  She was concerned when I said I had had a (political) stroke in 2017.    I'll be following up with a neurologist, as she explained something which I've already forgotten, something about a stroke and temporal lobes and visual distortion.

We discussed the difference between the focus of optometrists and ophthalmologists, and I decided to seek treatment instead with an optometrist.  

That would be the best advice I could offer:  see an optometrist, in a practice, so that if necessary he/she can consult with others who are more experienced.    And take her to a neurologist if she didn't see one after her stroke.

Does your mom say the lines are straight? Or wavy? This is the only thing I could find online: Keratoconus

https://medium.com/@foulkes.p1s/those-wavy-lines-you-see-are-a-sign-of-eye-disease-7759c0bf6379