Rinpoche checked for the eye operation and it is very good to have it. Before the operation, make four lu:

• The one facing north should be green color
• The one facing south: yellow color
• Facing east: white
• Facing west: red

Then, with a good motivation, send them in the four directions. Send each one in the direction it is facing. There is no prayer to do; you are just offering yourself in the four directions.