Thank you for fixing the crashing app when I use the camera

I have used this for years for confirming the position of preoperative toric axis marks on the cornea as well as for measuring exact IOL position at the slit lamp. I did not realize others were using this app exactly the same way. The camera view is especially useful/necessary for visualizing the position of the marks on the cornea preoperatively. The camera has quit working in the latest version (or perhaps a bug with the latest iOS). Now selecting the camera from within the app does not work but goes to the phone’s home screen. Hopefully this can be corrected soon. Fantastic app.

As an Ophthalmologist I have used this app on an almost daily basis to measure the exact axis of a Toric IOL in the post op period. It is accurate to 1 degree in the clinic and is essential to obtain the IOL axis especially for input in the Berdahl/Hardten Astigmatism Fix calculator to evaluate if a Toric IOL should be rotated. Just sit patient at slit lamp. Have them look into the beam. Rotate the beam to align with the IOL axis. Have patient sit back and hold cell phone up to the slit lamp and adjust the axis line in the app to be coincident with the slit beam while looking through the slit lamp. Extremely accurate and fast. Congratulations to the authors of this most useful medical tool.

Useful tool to record axis of an IOL in situ when your slit lamp doesn’t have a protractor. Also useful to plan manual AK arcs by entering the axis and arc length.