For cataracts patients, when is surgery not recommended?

I prefer to perform cataract surgery with my patients under monitored sedation (this is different from general anaesthesia or GA). Monitored sedation is when patients are completely asleep (without the need for GA) and under the close monitoring of an anaesthetist. Monitored sedation (unlike GA) is very safe, even for patients who have pre-existing medical conditions. I believe that patients have the best experience and are most comfortable when they are completely unaware of the ongoings of the surgery.

Well, for very mild cataracts, the common treatment is doing nothing. Maybe prescribing a new pair of glasses. If patients are not too keen on surgery and feel that lifestyle is not impacted, I think its ok to just leave it. There are many patients, I mean the overwhelming majority of patients that I've seen with cataract, who say that the cataracts aren't affecting their lives, so we just leave it alone and that is fine. That is the most common way of treating it.