in birds is well developed, and it can be observed that the trabecular meshwork extends through the iris stroma (BAYON et al., 2007; RODARTE-ALMEIDA et al., 2013).
For patients who were not cooperative enough for gonioscopy, the iridocorneal angle
was visualized by Scheimpflug imaging system (Pentacam, Oculus, Lynwood, WA).
They disclosed bilateral ciliochoroidal effusion with anterior rotation ofthe ciliary body and iridocorneal angle
narrowing (Figures 1-3).
Correct measurement of anterior segment parameters such as central corneal thickness (CCT), iridocorneal angle
(ICA), anterior chamber volume (ACV), and limbus-limbus distance (LLD) is crucial in some of anterior segment surgeries (refractive surgeries) and clinical follow-up of many anterior segment-related diseases (i.e., congenital or acquired corneal diseases and glaucoma follow-up).
Primary open angle glaucoma was diagnosed by the criteria of Foster et al., which means that patients had open iridocorneal angle
by gonioscopy, thinning of the neuroretinal rim and visual field defects (18).
 POAG is characterized by unobstructed iridocorneal angle
but diminished outflow of aqueous humor  leading to raise in intraocular pressure (IOP) >21 mm Hg.
"Phacogenetic glaucoma": lens-induced glaucoma; mature or hypermature cataract; open iridocorneal angle
," American Journal of Ophthalmology, vol.
Goldmann3 mirror lens was used to assess the iridocorneal angle
and was graded according to the Schaffer classification.
The iridocorneal angle
was evaluated and found to be within normal limits and similar between eyes.
Parasympathetic nerve fibers synapse in the ciliary ganglion and enter the ocular globe through the short ciliary nerves to innervate the iris, the ciliary body and ciliary muscle, and parts of the iridocorneal angle
(uveal trabecular meshwork and scleral spur).
The iris leaflets near the iridocorneal angle
were adherent to the posterior aspect of the trabecular meshwork.
The iris metastases were amelanotic tumors with moderate dilated vessels and in growing to anterior chamber and iridocorneal angle