I was in the same position as you -- the cataract in my left eye was much more developed than in my right, where one was just beginning. I had my right eye done very soon after my left, mainly because I don't tolerate contacts well and I knew it would need to be done eventually anyway. I don't know of any reason you can't do the same.
The time for cataract surgery is somthing you have control over -- you don't necessarily have to wait until the cataract "matures". If wearing one contact lens is bothering you, talk to your surgeon about having the left eye done now.
I agree with cwatt1. Wearing a contact lens in the unoperated eye does not give comfortable binocular vision to everyone. If your surgeon continues to be opposed to doing your left eye now, I'd recommend getting another opinion.
I am a 53 year old woman who is having cataract surgery on one eye. The doctor wants to make that eye -2.5. My good eye is 8.5. He says I will have to wear contact in right eye and glasses. Has this worked for anybody, or do you all have distortion?
That has been discussed at length and at depth. Use the search feature and archives and read about monovision IOL, mini-monofocal. Short answer is yes it will be difficult for the eyes to work together.
Why is there a comment here with nothing written in it?
It means I have read the discussion to that point and do not have anything to add.