Visual reflexes help protect our eyes and improve our vision. The accommodation reflex enables us to focus on near and distant objects depending on the shape of the lens. The light reflex controls the size of the pupil in order to prevent too much or too little light from entering the eye. The corneal reflex causes us to blink as soon as the cornea is irritated, protecting it against harm.
The document below briefly summarises the processes involved in these reflexes and which nerves are involved in eliciting them. If I have time I will add pictures, but for now I hope this summary will aid learning alongside pictures you may find in books and on the internet.