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]

Farlex Partner Medical Dictionary © Farlex 2012

photocoagulation

(fō′tō-kō-ăg′yə-lā′shən)

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)

[photo- + L. coagulo, pp. -atus, to curdle]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

Photocoagulation

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

Mentioned in: Retinoblastoma

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.

References in periodicals archive ?

Laser Photocoagulation was meted out with a 523 um argon laser for obliteration of the tumour's vascular supply, along with adjuvant cryotherapy in selected cases.

Outcome of interventional treatment modalities for retinoblastoma: Experience at a tertiary care centre in Pakistan

Macular grid laser photocoagulation for branch retinal vein occlusion.

VISUAL OUTCOME AFTER INTRAVITREAL BEVACIZUMAB (AVASTIN) IN THE TREATMENT OF BRANCH RETINAL VEIN OCCLUSION

FA clearly indicated leakage, diagnosed presence of new vessels and localized the site for photocoagulation.

ROLE OF FUNDUS FLUORESCEIN ANGIOGRAPHY IN EVALUATION OF RETINAL DISORDERS

Manual measurement of subfoveal choroidal thickness, heterogeneous groups of patients with and without previous panretinal photocoagulation, and the variable timing of previous anti-VEGF injections were the limitations of our study.

Early Retinal and Choroidal Coat Thickness Changes after Intravitreal Dexamethasone Implant Injection for Diabetic Macular Edema

Subretinal neovascularization complicating laser photocoagulation of diabetic maculopathy.

Short-term Efficacy of Micropulse Yellow Laser in Non-center-involving Diabetic Macular Edema: Preliminary Results

Current treatment option includes corticosteroids, laser photocoagulation, retinal cryotherapy and surgical management in form of Pars Plana Vitrectomy (PPV) for VH or TRD.

Role of intravitreal bevacizumab in management of Eale's Disease

While those CRVO patients who had vision of 6/36 or better, associated vasculopathies, vitreous haemorrhage, retinal neovascularization and previous laser photocoagulation were excluded from the study.

EFFECTIVENESS OF RADIAL OPTIC NEUROTOMY FOR ISCHEMIC CENTRAL RETINAL VEIN OCCLUSION

From each case, the following information were collected: (1) demographic features, including age, gender, and race; (2) general information of T2D progression and management, such as date of T2D diagnosis, 5-year HbA1c levels (including the lowest, median, and highest values), and medications for T2D (including metformin, insulin, and other hypoglycemic agents); (3) grading of DR and prior DR treatments such as laser photocoagulation and intravitreal antivascular endothelial growth factor (VEGF) agents; and (4) ophthalmic history such as retinal vein occlusion and age-related macular degeneration.

Association of Metformin Treatment with Reduced Severity of Diabetic Retinopathy in Type 2 Diabetic Patients

Focal PC is delivered with very low energy compared with panretinal photocoagulation (PRP); nevertheless, some enlargement of laser scarring may lead to the atrophy of the retinal pigment epithelium (RPE) and photoreceptor cells.

Direct Photocoagulation Guided by Merged Retinal Images for the Treatment of Focal Diabetic Macular Edema

The area where laser photocoagulation was performed becomes atrophic, eventually restricting the patient's peripheral visual field.

Functional and Structural Outcomes of Temporal Zone II-Sparing Laser Photocoagulation Combined with Intravitreal Bevacizumab in Retinopathy of Prematurity

Key words: Diabetes mellitus; Macular edema; Laser photocoagulation; Vitrectomy

Diabetic macular edema: Traditional and novel treatment

The treatment of choice has been laser photocoagulation and/or cryotherapy in early stages.

Coats' Disease-Related Macular Edema Treated with Combined Aflibercept and Laser Photocoagulation