Several: There are several. The most common are phenylephrine, tropicamide, and cyclopentolate. The duration of effect varies. Dilation must be done with caution because it could precipitate an attack of high pressures in certain eyes causing permanent damage. Your doctor will look for this risk prior to dilating
Answered 1/4/2016
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See below: Most common ones are tropicamide (Mydriacyl) 0,5% or 1% along with phenylephrine (Neosynephrine) 2.5%. Some people use cyclopentolate (Cyclogyl) 1%, but this is longer lasting.
Answered 4/19/2016
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