Pain after cataract surgery
is usually less and will subside in 1-2 days.
Now it is more than a month after surgery you can go for a refraction
test where you can get glasses prescribed for you ( depends on the type of IOL implanted ) and also retinal evaluation for diabetic retinopathy
Using glasses for reading helps to improve the strain and also your tolerance to sunlight.
Intolerance to light after surgery is common and will slowly come down over a period of time.
Hope I answered the query.Take care...