Hello – I don’t think I’ve missed a full day’s dose of methimazole, so I can’t comment on that issue.
The "haziness" that you mention could be related to dryness…and issues focusing *can* potentially be related to eye involvement. If you aren’t already seeing an ophthalmologist to check out the eye issues, that would be worth a visit.
Also, keep in mind that the stronger gel drops can actually *cause* vision impairment for 20 minutes or so after you apply them. I generally save the gel for night and stick to drops during the day.
Take care!