Zhongshan Ophthalmic Center, Sun Yat-sen University
Observation index： Visual acuity，Intraocular pressure，Ophthalmoscope，MPOD，Visual field and OCT.
Inspection parameters of OCT：
1. Retinal nerve fiber layer thickness
2. Ganglion cell complex thickness
3. Mean thickness of the central retina
4. Mean defect
Age
40–90
Sex
ALL
Healthy volunteers
Accepted
You may be eligible if
Experimental group：
(1) According to the diagnostic criteria of PACD
(2)History of peripheral iridectomy or trabeculectomy
(3)Over 40
(4)Phakic eyes
(5)Intraocular pressure is less than 21mmhg, more than one week
(6)Eyes with clear optical media.
Control group：
(1)No history of glaucoma and other eye diseases
(2)Phakic eyes
(3)Over 40
(4)Intraocular pressure10\~21mmHg
You may not be if
(1)History of corneal diseases
(2)History of eye tumor or other ophthalmic surgery
(3)Cataract
(4)Taking supplements containing lutein within 6 months
(5)Snellen's visual acuity was less than 6 / 20，the diopter is beyond ± 6 degrees
