dilating your pupil

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wHAT is dilation?

Dilating your pupils entails putting some drops into your eyes, and waiting for your pupils to dilate (See Fig. 1) so that a full retinal examination can be performed. On average this takes 3 instillations of the drops and a wait of around 20 to 30 minutes. The effects of the drops last for around 4 hours and will blur your vision especially for near / reading. It is also important that you inform your doctor if you're driving as this is not advisable after you've had your pupils dilated. 

why is dilation necessary?

what is seen after dilation? 

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Figure 1. Illustration of pupil dilation. Image courtesy of NIH National Eye Institute

what is viewed on retina?