The following exercises work on the eyesight, and also on the brain, intellect, memory, concentration, throat, and nervous strain.

Benefits: It works on the eyesight. It clears the pharynx. It aids concentration. It strengthens the will power. It works on the intellect. Improves memory and mental fatigue.
How to do it: These four exercises need to be done standing up.
1st exercise: Tilt the head back slightly back and keep the eyes open. Hold it there with long deep breathing for 2-3 minutes.
2nd exercise: Place the hands in pray pose with the side of the thumbs touching the sternum. Hold the position for 2-3 minutes with long deep breathing.
3rd exercise: Place both feet together, and tilt the head all the way back. Keep the eyes open. Hold the position for 2-3 minutes with breath of fire. /breathing/breath-of-fire.html
4th exercise: Focus the eyes on a spot 5 feet ahead of the toes. Hold for 2-3 minutes, with breath of fire.

Benefits: It works on the eyesight, and the intellect.
How to do it: Seat in easy pose and bring the chin to the notch of the sternum.
Breath: Breath of fire.
Time: 2-3 minutes.
Benefits: It works on the eyesight.
How to do it: Seat in easy pose and place the hands in Venus lock on the lap.
/Mudras/Venus-Lock.html
Look at the third eye, and send white light to the eyes.
Breath: Breath of fire. /breathing/breath-of-fire.html
Time: 2-3 minutes.

Benefits: It works on the eyesight.
How to do it: Seat in easy pose. Close the eyes, and direct your eyes to the back of the head.
Breath: Breath long deep breathing through the nose.
Time: 1-3 minutes.
To end: Inhale, exhale and apply root lock holding for 30 sec.
/bhandas/Mula-Bhanda-or-Root-Lock.html