Here's a breakdown:
* Que nota - This is a common expression used to express surprise or disbelief, similar to "What's wrong?" or "What's the matter?".
* hijo - This means "son".
* ponte - This is the command form of the verb "poner" (to put on).
* gafas - This means "glasses".
The phrase suggests that the speaker is addressing their son and is concerned about something, possibly related to their vision.