S. N

Ocular condition

Differentiating feature

Investigation required

1

Uveitis

Engorged iris blood vessels, KP, AC cells

Slit lamp, uveitis workup, blood test

2

Acute attack of angle closure glaucoma

Shallow AC, Corneal edema but no Neovascularization on iris

Slit lamp, gonioscopy, AS-OCT, fundus, fellow eye examination

3

Intraocular tumors

Neovascularization on iris and in angle

± Slit lamp, fundus examination, B scan, ancillary imaging for Metastasis

4

Carotid-cavernous fistula

Blood in Schlemm’s canal

Gonioscopy, imaging studies of brain

5

Long standing Retinal detachment

PVR changes and neovascularization,

post R.D surgery—signs of ischemia in anterior segment

Slit lamp, fundus, B scan

6

Anterior segment dysgenesis

Corectopia, iris atrophy with prominent blood vessels

Slit lamp, B scan