I didn't notice your history of high ICP in your above post but at least I came up with the correct diagnosis :)
To answer your question: That is correct. With your symptoms the lasik
is not doing enough anymore....
If you are having damage to your optic nerve and loss of visual field, which requires an exam by a ophthalmologist to tell for sure, then it is important to get treatment sooner rather than later.
Why? Because any loss of visual field or damage to the optic nerve quickly becomes irreversible if not treated.
Going to the ER really won't be of much value as they are not equipped to evaluated the optic nerve and visual fields. If at all possible I would urge you to do everything in your power to be seen by an eye MD.
Since you have already had the workup for pseudotumor cerebri you should not require another lumbar puncture etc.
Since Diamox is not an option and it seems that lasix is no longer working you may need to have a luboperitoneal shunt placed. This is very effective in PTC.
Another option, although still surgical in nature, would be gastric bypass or banding to help you loose weight. Marked weight loss has been proven to lower ICP, decrease vision loss, headaches and other symptoms.
So. What is the take home message? I would not ignore the resurgence of your headaches and other symptoms as severe, and permanent, vision loss could result.
Does this make sense to you?
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Dr. Rick MD FACS