I hope all goes as well as could be expected.
In November of last year, my son and DIL discovered that their 7-year-old autistic daughter (my granddaughter) had cataracts in both eyes - fast growing ones that virtually blinded her within 2 months. Being only slightly verbal, she couldn't say anything to signal her sight loss.
The day after her first cataract surgery, the nurse took off the bandage. My granddaughter blinked and saw the nurse's face. She touched the nurse's face with her little hand and with a huge smile said, "Oh, pretty, pretty." My DIL said she almost cried, and she almost cried again while describing the event to me on a phone call.
The other eye's surgery followed by two weeks, and likewise went well. During the following 9 months my granddaughter's verbal skills have exploded. She even sings a little tune during which she says the days of the week. Grandma and grandpa are so blessed by this little one and her amazing parents.
My point: keep the faith. It's a marvel the skill, competence and technology that today's eye surgeons possess.
I hope the best for you.