Glaucoma/Ocular hypertension concept authoring questions

I am currently authoring "Ghost cell hypertension" but also looking at the modelling of the existing concept 232088004 |Ghost cell glaucoma (disorder)| which currently is modelled as per the image below. 

The description of ghost cell glaucoma in the EGS guidelines states ghost cells occur 1-4 weeks after vitreous haemorrhage and the trabecular meshwork becomes obstructed.  So should the FSN of the concept be - Ghost cell glaucoma following vitreous haemorrhage (disorder).  I can then model this appropriately as AFTER a 31341008 |Vitreous hemorrhage (disorder)| and also model the obstruction of the TM.  Or can haemorrhage in other areas have the same result so - Ghost cell glaucoma following intraocular haemorrhage (disorder)?

The same modelling would apply to Ghost cell hypertension though the hypertension would also be modelled.

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Thanks Elaine Wooler I believe that although the commonest cause is after a vitreous haemorrhage, it can occur following any intraocular haemorrhage. 

I think "Ghost cell ocular hypertension" would work (rather than "Ghost cell hypertension"). 

Thanks!

Question regarding causality for the following new concepts:

• Glaucoma following ocular surgery (disorder)

• Ocular hypertension due to ocular surgery (disorder)

Is there a causal link in both concepts or just the ocular hypertension?  The requested descriptions seem to indicate only a causal link for ocular hypertension but checking on this.

Is the ocular hypertension always post-surgery (we term this as due to and following)?

Many thanks as this impacts modelling.