Onosmodium onos.

Dull heavy pain, pressing upward in the occiput with vertigo.
Pain in occiput and forehead in the morning on waking.

Clinical:
Headaches caused by straining the eyes, with strained feeling in the eye, or also associated with troubles in the ears and vertigo.

Eyes feel strained, especially on reading.
The retina and optic nerve becomes congested.
The eyeballs pain and lids are sore and heavy.