photocoagulation


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Related to photocoagulation: Panretinal Photocoagulation

photocoagulation

 [fo″to-ko-ag″u-la´shun]
condensation of protein material by the controlled use of an intense beam of light (e.g., argon laser); used especially in the treatment of retinal detachment and destruction of abnormal retinal vessels or intraocular tumor masses.

pho·to·co·ag·u·la·tion

(fō'tō-kō-ag'yū-lā'shŭn),
A method by which a beam of electromagnetic energy is directed to a desired tissue under visual control; localized coagulation results from absorption of light energy and its conversion to heat or conversion of tissue to plasma (atoms stripped of electrons).
[photo- + L. coagulo, pp. -atus, to curdle]

photocoagulation

/pho·to·co·ag·u·la·tion/ (-ko-ag″u-la´shun) condensation of protein material by the controlled use of an intense beam of light (e.g., argon laser) used especially in the treatment of retinal detachment and destruction of abnormal retinal vessels or intraocular tumor masses.

photocoagulation

(fō′tō-kō-ăg′yə-lā′shən)
n.
Surgical coagulation of tissue by means of intense light energy, such as a laser beam, performed to destroy abnormal tissues or to form adhesive scars, especially in ophthalmology.

pho′to·co·ag′u·late v.

photocoagulation

Ophthalmology The use of argon, or less commonly, xenon, lasers to focally burn the retina to ↓ neovascularization, microaneurysms, macular edema in Pts with various retinopathies Outcomes 50% ↓ in severe visual loss, compared to nontreated eyes. See Diabetic retinopathy. Cf Vitrectomy.

pho·to·co·ag·u·la·tion

(fō'tō-kō-ag'yū-lā'shŭn)
A method by which a beam of electromagnetic energy is directed to a desired tissue under visual control; localized coagulation results from absorption of light energy and its conversion to heat or conversion of tissue to plasma (atoms stripped of electrons).
[photo- + L. coagulo, pp. -atus, to curdle]

photocoagulation

Destruction of tissue by the heating effect of intense focused white light or by the use of a laser. It is widely used by ophthalmic surgeons to treat disorders of the RETINA, especially DIABETIC RETINOPATHY and areas of retinal degeneration that threaten to lead to retinal detachment.

Photocoagulation

Cancer treatment in which the tumor is destroyed by an intense beam of laser light.
Mentioned in: Retinoblastoma

photocoagulation

application of an intense beam of light (laser light) to stabilize proliferating retinal blood vessels in diabetic retinopathy, or reattach detached retina

photocoagulation 

Process of changing blood and tissue from a fluid to a clotted state produced by the heat of an intense beam of light (e.g. laser), as used in the treatment or prophylactic treatment of retinal diseases (e.g. diabetic retinopathy, retinal detachments, retinal breaks, haemorrhages). See laser; age-related macular degeneration; retinal break; retinal detachment; diabetic retinopathy.

photocoagulation

condensation of protein material by the controlled use of an intense beam of light (e.g. argon laser); used especially in the treatment of retinal detachment and destruction of abnormal retinal vessels or intraocular tumor masses.
References in periodicals archive ?
9Laser photocoagulation became the standard treatment for DR including DME after publication of results from the Early Treatment Diabetic Retinopathy Study in 1990.
Recalcitrant DME was defined as persistent macular edema with CFT [greater than or equal to]300 [micro]m, lasting 3 months after at least 3 intravitreal anti-VEGF and 3 IVTA injections with 2 sessions of focal grid laser photocoagulation.
These include laser photocoagulation,6,7 cryotherapy,8-10 subconjuctival carboplatin11 and intra arterial chemotherapy in ophthalmic artery.
Subthreshold micropulse diode laser photocoagulation is a treatment that theoretically avoids damaging the inner neurosensory retina, thereby reducing potential complications such as paracentral scotomata and enlargement of post-treatment scars.
It was found by La Heij et al in one of their studies that the visual acuity improvement after vitrectomy for DME was significantly better in the eyes which did not have laser photocoagulation previously.
Laser photocoagulation has been used for the treatment of avascular retina to destroy the cells that produce VEGF, but the structural and functional outcomes in patients with severe ROP affecting zone I or posterior zone II were usually unsatisfactory.
The sixth infant who developed stage 5 ROP had aggressive posterior ROP and developed stable stage 4A ROP in the fellow eye after laser photocoagulation.
The short term efficacy of combination treatment (grid laser photocoagulation plus intra vitreal bevacizumab) in the treatment of DME.
Endolaser panretinal photocoagulation with up to 1000 laser coagulation spots was applied to all eyes included in the study.
The aim of the present study was to report our experience with the safety and efficacy of transpupillary diode laser photocoagulation for the treatment of type 1 ROP infants according to the definitions specified by the ETROP study.
The exclusion criteria were: previous laser photocoagulation, intravitreal injections or vitrectomy, significant media opacity, and contraindications for bevacizumab or TA.
HS-UK product manager, Jacqui Kenyon, said: "The Integre Pro Scan provides a pattern and wavelength for every pathology, whether you are accurately positioning focal treatment in the macular area, or performing panretinal photocoagulation in the periphery"