Quickstart:

Download RetinoRef. swf to a place of your choice. Open it with a doubleclick or chose a program, for instance Internet explorer. Allow blocked content.

Graphik    skiaengl Dia 1

Click to NEW, and watch the movements of the two lines, one outside on the iris, one inside the pupil. Put a glas by drag-and-drop in front of the eye, and watch the altered movements. If you donīt have a movement inside the iris at all, click on NEW or try -7 dpt or +7 dpt.

Decide, if you have a "for" or "against" movement. Your aim is no movement at all, just a flash. Try-and-error brings you to your aim. It is just in between the broad "for" or "against" movement.

Look at the three folders on top of the screen: The first one is activated during every start. Klick at the middle one, it activates an examination for astigmatic glasses:

Try to bring one direction only towards flashing, not both directions at the same time. If you find one direction flashing, the second missing axis is asked. If you find the second glass, please click on the
 folder symbol prescipt = RX. 

Two values are moving to the left. Please chose your working distance by clicking onto it. The results are two values in the blue fields. The difference betwen them is identical to the amount of astigmatism. Think about the prescrption, have a choice, and click to your favourite at the white circle.  After another click on CHECK a green hook should show up in front of your choice.


Disclaimer:
Retinoref.swf is only for educational purposes, it exaggerates movements. There are a lot of ways to a correct prescription, not every 
possible way is demonstrated. The aim was to develop a close-to-real simlation for a tricky, but very helpful examination.
It derived from experiences with disabled persons, which have a right to get a sharp image on their retina. 
