Angle Closre Glaucoma Definitions

Primary angle-closure suspect (PACS)

• Gonioscopy shows posterior meshwork ITC in three or more quadrants but no PAS.
• Any patients with less ITC have evidence of intermittent angle-closure, and a lower threshold for diagnosis such as two quadrants of ITC or even a very narrow angle approach of 20° may be justified.
• Normal IOP, optic disc and visual field.

Primary angle-closure (PAC)

• Gonioscopy shows three or more quadrants of ITC with raised IOP  and/or PAS, or excessive pigment smudging on the TM.
• Normal optic disc and field.

Primary angle-closure glaucoma (PACG)

• Gonioscopy shows ITC in three or more quadrants.
• Optic neuropathy.

- compiled & published by Dr Dhaval Patel MD AIIMS