I've had vision problems since the first round of ON in 1978. Another severe bout of it ten years later left a blacked out blind area in the left eye's visual field that the right eye usually is able to compensate. The left eye vision is also dimmer than the right.

Transient symptoms that last anywhere from a few minutes to days are blurry vision, focus fading in and out, extreme blurred vision up close, light sensitivity, left eye pain, delayed focus when looking from one thing to another, delayed ability to see anything when going from bright to darker areas, loss of peripheral vision and slowness in eye movement.

Headaches are common for me when the eyes are bad as is dizziness/light headedness and these symptoms appear before the visual disturbances; so that can be relied upon to let me know not to do anything that requires good vision like driving.

Increasing font size on the computer helps ease eye strain but when things are really not going well with the eyes, reading/writing or doing anything that requires visual focus like driving is off the schedule until things improve. Even entering numbers onto any sort of touch pad, like a phone or debit machine, are too hard at times like that.

It is unsettling when visual problems hang around for longer than a day or two, because it brings unwanted thoughts about it not getting better. It makes me feel so badly and sad for those who have had their symptoms progress beyond the hope of it getting better...and who live only with the hope that the symptoms do not get worse.

MS is like living with a thief in the night. It silently steals away what most take for granted; and vision seems to be a common target.