ocular hypotony

hypotony, ocular

Abnormally low intraocular pressure, usually less than 6 mmHg. It may result from trauma in which there is a perforating wound with loss of aqueous, concussion injury or following surgery for glaucoma. Persistent hypotony may result in visual impairment due to choroidal folds, choroidal detachment, retinal folds or retinal detachment. Syn. ocular hypotonia; ocular hypotonus. See choroidal folds; cyclodialysis.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
Choroidal detachment associated with delayed spontaneous ocular hypotony. Arch Soc Esp Ophthalomol 2007; 82: 381-4.
Most common early postoperative complications were hyphaema (n = 4, 10.0%), transient vitreous hemorrhage (n = 1, 2.5%), and ocular hypotony (n = 1, 2.5%) (Table 2).
The precipitating factors include sudden ocular hypotony, or valsalva manoeuvre [6, 7].
To avoid eventual complications related to ocular hypotony, the sustained-release dexamethasone devices were inserted before the phacoemulsification procedures.
Five patients developed recurrent vitreous haemorrhage during study period, one patient developed cataract (1.7%), one (1.7%) had ocular hypotony defined as intraocular pressure less than 5 mmHg and one (1.7%) developed endophthalmitis.
Surgical complications include corneal scarring, symblepharon, ocular hypotony, and iris atrophy and recurrence of tumor.
HPMC 2% helps to maintain AC depth and reduces incidence of complications related to shallow AC and ocular hypotony following trabeculectomy.
The likely explanation for ocular hypotony was long standing idiopathic posterior scleritis/intraocular inflammation.