In your slit lamp, rotate the illumination and optics assembly completely to one side.
Insert the slit lamp adapter into the hole in the tonometer.
![Faq How To Use The Eyer In A Slit Lamp 02](https://ae907a66.rocketcdn.me/wp-content/uploads/2023/10/FAQ-how-to-use-the-Eyer-in-a-slit-lamp-02.jpg)
Open the adapter by carefully loosening the screw.
![Faq How To Use The Eyer In A Slit Lamp 03](https://ae907a66.rocketcdn.me/wp-content/uploads/2023/10/FAQ-how-to-use-the-Eyer-in-a-slit-lamp-03.jpg)
Mount the device on the bracket.
![Faq How To Use The Eyer In A Slit Lamp 04](https://ae907a66.rocketcdn.me/wp-content/uploads/2023/10/FAQ-how-to-use-the-Eyer-in-a-slit-lamp-04.jpg)
When the device is in place, close the top of the adapter.
Do not apply excessive force.