Ask the expert

Why does the optician blow air into my eyes during the eye examination?

Answer: 

This is part of a test which measures your intraocular pressure (IOP) using a tonometer - a raised IOP can indicate a problem with the eye such as glaucoma.

The puff of air flattens your cornea and the instrument senses the deflection and calculates your IOP.

Ask an Expert

Ask the Expert

Speak to one of our qualified optometrists or audiologists

Ask the Expert