filtering bleb

filtering bleb

a blister of conjunctiva resulting from glaucoma surgery by which a flap of sclera is created in the eye wall, allowing aqueous humor to percolate out of the eye and underneath the conjunctiva, thus lowering intraocular pressure.
Synonym(s): filtering cicatrix

fil·ter·ing bleb

(fil'tĕr-ing bleb)
A blister of conjunctiva resulting from glaucoma surgery by which a flap of sclera is created in the eye wall, allowing aqueous humor to percolate out of the eye and underneath the conjunctiva, thus lowering intraocular pressure
References in periodicals archive ?
However, the postoperative scarring process of filtering bleb would always get worse and affect long-term success rate.[11] Moreover, they have many terrible complications with high incidence rate, such as infection, thin-walled bleb, irregular edema of epithelium, and toxic effects to eyes.[12] Bleb leakage would also exert bad influence on normal filtering function.
It has been established that IOP reduction in NPDS is achieved with a number of components: subconjunctival filtering bleb, intrascleral filtering bleb, suprachoroidal filtration, and enhanced episcleral vein outflow of aqueous from Schlemm's canal [14, 15].
Baker, "Exogenous Aspergillus niger endophthalmitis in a patient with a filtering bleb," Retina, vol.
The goal was to assess whether additional interventions associated with filtering bleb, such as needling or 5-fluorouracil (5-FU) injections, greater number of follow-up visits indeed influence patients' QoL.
A successful trabeculectomy is characterized by an elevation of the conjunctiva at the surgical site, commonly referred to as a filtering bleb [3].
Medical and surgical options on both eyelid and filtering bleb exist to treat eyelid retraction in patients with glaucoma.
Mitomycin C augmented glaucoma surgery: evolution of filtering bleb avascularity, transconjunctival oozing, and leaks.
After removing the bandage, eye examination was done with particular attention paid to the condition of filtering bleb, cornea for striate keratopathy or oedema, anterior chamber depth and contents, pupil for reaction and shape.
One of the most interesting and exciting characteristics of canaloplasty is that this procedure, unlike traditional trabeculectomy, works without the need of a filtering bleb, which is usually absent [13].
The most common problem was scarring of the filtering bleb in 35% of the cases (35% in the Phaco 1 group and 34% in the Phaco 2 group) and choroidal detachments in 7% (7% Phaco 1 vs.
However, these methods are limited in that the implanted graft may become detached or dislocated if there is air movement from the anterior chamber to the filtering bleb after surgery.
The conjunctiva was reopened, and fibrous scarring around the filtering bleb or Tenon cyst encapsulating the valve body was removed in 8 patients.