piero sensi and maria teresa timbal came up with a drug in the 1970s that shortened recovery and reduced cases of tuberculosis.
piero sensi and maria teresa timbal came up with a drug in the 1970s that shortened recovery and reduced cases of tuberculosis.
who came up with a drug in the 1970s that shortened recovery and reduced cases of tuberculosis?
piero sensi and maria teresa timbal
Na
Na
the pupil is dilated using drops (if the iol is to be placed behind the iris) to help better visualise the cataract. pupil-constricting drops are reserved for secondary implantation of the iol in front of the iris (if the cataract has already been removed without primary iol implantation). anesthesia may be placed topically (eyedrops) or via injection next to (peribulbar) or behind (retrobulbar) the eye. oral or intravenous sedation may also be used to reduce anxiety. general anesthesia is rarely necessary, but may be employed for children and adults with particular medical or psychiatric issues. the operation may occur on a stretcher or a reclining examination chair. the eyelids and surrounding skin will be swabbed with disinfectant. the face is covered with a cloth or sheet, with an opening for the operative eye. the eyelid is held open with a speculum to minimize blinking during surgery. pain is usually minimal in properly anesthetised eyes, though a pressure sensation and discomfort from the bright operating microscope light is common. the ocular surface is kept moist using sterile saline eye drops or methylcellulose viscoelastic. the "discission" into the lens of the eye is performed at or near where the cornea and sclera meet (limbus = corneoscleral junction). advantages of the smaller incision include use of few or no stitches and shortened recovery time.
cataract surgery