Also it can take time for some people to "neuroadapt", for their visual system to learn to work with the different sort of optics of an IOL to figure out how to see better at near. For standard multifocal lenses that can happen right away, or take serveral weeks or a few months depending on the person. I haven't seen statistics for the Symfony, though one doctor that did a comparision study between the Symfony and the AT Lisa trifocal said that neuroadaptation with the Symfony averaged longer, but he didn't quantify how long that was (and I've not seen any statistics on the issue). I was fortunate and had 20/25 at near by a couple of days after surgery in the eye that hit the refractive target, I didn't notice any need to neuroadapt. I don't know if my visual system was used to the need to adapt, since I'd previously worn multifocal contact lenses before my cataract, more than one model with differing optics, so perhaps I'd gotten used to adapting to optical changes.
Gentamicin is produced by the fermentation of Micromonospora purpurea . It was discovered in 1963 by Weinstein, Wagman et al. at Schering Corporation in Bloomfield, . working with source material (soil samples) provided by Rico Woyciesjes.  Subsequently, it was purified and the structures of its three components determined by Cooper, et al., also at the Schering Corporation. It was initially used as a topical treatment for burns at the Atlanta and San Antonio burn units and was introduced into IV usage in 1971. It remains a mainstay for use in sepsis.
I am writing to add to the growing reports of long term adverse effects post lasik eye surgery. In 2002, I had lasik... I am a neurologist and should probably known better but believed the consent process would be similar to that of operations carried out in the [redacted]. Whilst I accepted a small risk of visual aberration -halos etc- there was never at any time mention of a risk of permanent dry eyes. I suffered severe painful dry eye requiring punctal occlusion immediately post op which lasted for around 3 months. I had no preceding history of dry eye and no risk factors -male & otherwise well on no medications-... However, I have now had severe dry eye pain continuously for a year which has been devastating. I am in the medical profession and hence seen numerous ophthalmologists and tried all the usual treatments without any success -plugs/drops/compresses/omega-3/steroid drops etc-. The symptoms have ruined my quality of life at a time when I should be enjoying a new family and successful career. Instead I have become clinically depressed requiring high doses of anti-depressants -with no prior history of any depression- due to chronic -eye- pain. I have been near suicidal with the usual issues -guilt, anger, pain, despair- and cannot at present see how I can continue to function at work for very much longer.. Read more