Abstract:

Aqueous veins originate from the depths of the limbus. Aqueous veins generally contain clear aqueous at their origin and eventually join recipient episcleral vessels. Two to three aqueous veins are typically visible in an eye. The results of the compensation maximum test could be classified into four levels. Level I: aqueous influx phenomenon with compression. Level II: blood influx phenomenon with compression and aqueous reflux with relaxation. Level III: blood influx phenomenon with both compression and relaxation. Level IV: no change with both compression and relaxation. The classification of the compensation maximum test could assist to identify the region and degree of the diseased aqueous pathway. Thus it could help to screen the patients suitable for microcatheter based minimal invasive glaucoma surgery. （Ophthalmol CHN， 2019, 28: 88-89）

Key words: aqueous vein, minimal invasive glaucoma surgery