Why would vision decline in one eye 14 months after cataract surgery?

[Azmv]

About a year ago I had monovision cataract surgery with two Tecnic toric lenses.  The distance diopters targeted for the IOLs were:  Left (dominant eye) -0.5, and Right, -1.50.  CYL for Left was 2.25, and for Right was 1.50.

The results were great.  My left eye’s distance vision was close to 20/20.  My right eye came in at about -2.25 diopters.  While that was more nearsighted than planned, that works great for me as my near vision is great, and I’ve had no problems adapting to that much monovision.  I understand that the coming in more myopic on the right was not unusual, since the right eye before cataracts was already quite myopic (approximately -7 diopters), increasing the error range.

Just today, I noticed the vision declined in the left eye.  Distance vision is now about 20/90 (I have an eye chart at home).  When I put a cloth pirate patch on the left to check the vision on the right (which was unchanged), the left eye kind of hurt, like a sinus infection might make it hurt.  The vision seems kind of cloudy, and colors are less vibrant than for the near eye.

I have an appointment this afternoon with urgent care ophthalmology at the same hospital that did the surgery.

What might be causing this blurred vision?  What questions should I be asking?  What should the doctor be checking for?

Thank you.

[JohnHaganMD]

Far away the most common would be  1. the posterior capsule (not the IOL) is cloudy and you need a yag capsulotomy  2. you have developed a new and different problem.   Only an exam can tell for sure.