Glaucoma...Let's Revised...

Def:: increase IOP(intraocular pressure) above normal..>21 mmHg {N=12-20mmHg}

Causes: 

1. Open-angle glaucoma : increase R to fluid outfllow through trabecular space into Canal of Schlemm.
2. Angle-closure glaucoma: forward movmnt of Iris..>>>block the drainage.
3. Sometimes at Normal IOP:: due to changes in optic nerve make it more susceptible to P changes.

Importances:

1. Can cause blindness >>> compress optic nerve & retinal A>>>retinal atrophy, severe eye pain and blindness.
2. Can cause disturbance in focusing mech. of eye for near vision. 

Treatments : 

• Drugs : 

1. ACETAZOLMIDE (carbonic Anhydrase Enzym Inhibitor)>>>>> decrease aqueous humour secretion
2. ParasympathoMIMETIC ( ESERINE / PILOCARPINE )>>>open space of Fontana>>>increase flow

• Surgical : >>>open space of trabeculae.