In retinal detachment surgery, sealing the sensory retina to the pigment epithelium and choroid by a freezing probe applied to the sclera.
[cryo- + G. pēxis, a fixing in place]
Farlex Partner Medical Dictionary © Farlex 2012


In retinal detachment surgery, sealing the sensory retina to the pigment epithelium and choroid by a freezing probe applied to the sclera.
[cryo- + G. pēxis, a fixing in place]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

retinal break 

A full thickness opening in the neurosensory retina. It may be a hole, usually due to atrophy of the retina and often overlaid by an operculum; or a tear, horseshoe-shaped (U-shaped), round or slit-like, usually caused by posterior vitreous detachment in which the vitreous adheres to the retina and pulls it from the point of adherence during or just after an abrupt eye movement; or a giant retinal tear which involves 90º or more of the circumference of the globe and is commonly associated with Marfan's syndrome or Stickler's syndrome; or retinal dialysis which is usually the result of trauma. The patient may complain of photopsia, seeing floaters or flashes and some visual field defects and they may present with a vitreous haemorrhage. Management of retinal breaks includes localized laser photocoagulation (laser retinopexy) or cryopexy, a method of cryotherapy (freezing of the tissues causing local protein denaturation which leads to adhesion of the retina to the pigment epithelium), as the defect may lead to rhegmatogenous or tractional retinal detachment. See macular hole; retinal dialysis; retinoschisis; Shafer's sign.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
References in periodicals archive ?
The retinal tears segment further narrows down into freezing (cryopexy), laser surgery (photocoagulation), and others.
Retinal tears can be treated with office-based procedures using lasers or extreme cold (cryopexy) to seal the tear.
Retinal tears and detachments can be repaired, most often by laser photocoagulation or cryopexy (freezing), but these "spot welding" techniques must be performed promptly, often within 24 to 48 hours of diagnosis.
However, in some of the cases of inferior breaks, endolaser was used instead of cryopexy. This was based on the assumption that endolaser creates chorioretinal scar in a shorter time compared to cryopexy; therefore, it would hold an advantage for breaks in the inferior quadrants that benefit from the endotamponade effects for a shorter postoperative period.
Some surgeon emphasizes the necessity of creating a chorioretinal adhesion at this site with either cryopexy or photocoagulation.
The records of patients with a history of any of the following were excluded from the study: pars plana vitrectomy, detachment surgery, cryopexy, argon laser photocoagulation, penetrating or blunt ocular trauma, inflammatory ocular pathologies, glaucoma, glaucoma surgery, retinal vascular pathologies (vein occlusion, diabetic/hypertensive retinopathy, etc.), complicated cataract surgery, choroidal neovascular membrane development for reasons other than AMD (high myopia, trauma, angioid streaks, etc.) and media opacity.
(5) Topical anesthesia is used to anesthetize conjunctiva and sclera for several procedures like scleral indentation, forced duction test, subconjunctival injections, pterygium surgery] and for retinal cryopexy. Thus, topical anesthesia is effective and safe for manipulating conjunctiva and sclera as well.
Scleral buckling, pneumatic retinopexy and pars plana vitrectomy are effective at reducing tractional forces and are often combined with cryopexy or laser photocoagulation to create a fluid barrier and seal the retina (see Figure 4).
The surgical procedure included: transscleral cryopexy of the retina using a cryo-probe, stitching of an encircling silicone band (2.5 mm) and a silicone explant to the sclera (one or more, corresponding in size and localisation to the position of the retinal tears).
He asserts that "Radiance comes through the eye // and lodges like cut glass in the mind" ("Cryopexy") and alleges that "what gifts there are are all here, in this world" ("Italian Days").
If there are areas in your other eye he is concerned about, these can usually be bolstered or strengthened by laser treatment or freezing (cryopexy).
The eye specialist freezes the tear using cryopexy before injecting a bubble of gas into the vitreous cavity.