detachment


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Related to detachment: vitreous detachment

detachment

 [de-tach´ment]
the condition of being separated or disconnected.
detachment of retina (retinal detachment) separation of the inner layers of the retina from the pigment epithelium, which remains attached to the choroid; it occurs most often as a result of degenerative changes in the peripheral retina and vitreous body, which produce holes or tears in the retina ranging from tiny breaks of less than 0.1 mm to extensive holes extending over the entire fundus. It is most common in persons over 40, and about two thirds of affected patients are myopic (nearsighted). Trauma to the eyeball, severe contusions, inflammatory lesions, and sometimes ocular surgery such as for a cataract can also lead to retinal detachment.
Symptoms. The onset of symptoms may be gradual or sudden, depending on the cause, size, number, and location of retinal holes. The patient usually sees flashes of light and then notices cloudy vision or loss of a portion of the visual field. Another common manifestation is the sensation of spots or moving particles in the field of vision. Treatment should be sought immediately when any of these occur. In severe retinal detachment there can be complete loss of vision.
Treatment. Retinal detachment is corrected surgically. Two outpatient modes of therapy currently in use are photocoagulation, using the light source of an argon laser; and cryosurgery, in which a freezing probe is used to penetrate the tissues of the eye and encircle the hole or tear in the retina. Scar tissue eventually forms and seals the opening.

Scleral buckling is another treatment, which places the retinal breaks in contact with the pigment epithelium and choroid. Adhesions form and bind the sensory retinal layers to these structures. In some cases, such as vitreous hemorrhage, the surgeon performs a combined vitrectomy and humoral retinal repair. The purpose of the surgery is to remove vitreous that is opaque because of accumulated blood, and to stabilize the retina in apposition to the choroid. Aqueous humor eventually fills the space.

Pneumatic retropexy, the most recently developed treatment, consists of injection of air or gas into the posterior vitreous cavity, followed by positioning of the patient so that the bubble rises, presses against the area of torn retina, and pushes it back into its normal position against the choroid. Laser photocoagulation and/or cryopexy is then done to create inflammation within the tissues, resulting in scarring and permanent reattachment of the area(s) of torn retina. This procedure is appropriate for only certain types and locations of retinal detachment.

Preoperative and postoperative care of the patient requires a thorough knowledge of the type of detachment afflicting the patient and the surgical procedure performed. Positioning of the patient and the level of physical activity allowed after surgery are determined by the surgeon. Before discharge from the hospital the patient will need instruction in follow-up care, especially the correct procedure for instilling eye drops.
Retinal detachment. From Frazier et al., 2000.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

de·tach·ment

(dē-tach'ment),
1. A voluntary or involuntary feeling or emotion that accompanies a sense of separation from normal associations or environment.
2. Separation of a structure from its support.
Farlex Partner Medical Dictionary © Farlex 2012

detachment

Psychiatry A behavior pattern characterized by general aloofness in personal interactions; may include intellectualization, denial, and superficiality
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

de·tach·ment

(dĕ-tach'mĕnt)
1. A voluntary or involuntary feeling or emotion that accompanies a sense of separation from normal associations or environment.
2. Lack of connection to other people or the environment.
3. Separation of a structure from its support.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
There are two other types of retinal detachment. Exudative retinal detachment may be caused by diseases of the retina or injury or trauma to the eye.
'Today, in a short while we shall witness the inauguration of 271 NAF Detachment Birnin Gwari as a testimony of the NAF commitment to the fight against insurgency and banditry in Nigeria,'' he said.
Ammar Safar, Medical Director, Consultant Vitreoretinal Surgeon at Moorfields Eye Hospital Dubai, said: "The patient presented with a recurrent total retinal detachment and emulsification of the silicone oil which means that the one large bubble of oil had now broken down into literally millions of tiny bubbles, causing multiple complications.
* Know the risk factors for retinal detachment, such as severe myopia, a personal history of retinal detachment in one eye, a family history of retinal detachment, a history of ocular trauma, or previous eye surgery, such as cataract
2Lt Paul Holmes said: "I am incredibly proud of them all and can't believe that as a detachment we have raised over PS3,600 for different good causes this year."
During preparation, Region 9 HQ coordinated with the potentially affected detachments and the respective RSOs to determine whether additional support from the Marine Security Augmentation Unit (MSAU) at MCESG would be required.
Presence of total retinal detachment was associated with poor anatomical outcome (p = 0.04).
Since proposal by Hudspath and colleagues3, the method of tricuspid valve detachment hadn't get wide spread acceptability.
Once a detachment has been detected, surgery is necessary to locate and seal all the retinal breaks, reattach the retina, and prevent or reverse vision loss.
Conclusion: Pars plana vitrectomy along with silicon oil tamponade for retinal detachment related to choroi- retinal coloboma improves the long-term anatomical outcome however no significant improvement in visual acuity was observed.
In 2015, NAVSUP FLC Jacksonville Detachment Key West Fuels Division set the single day sales record twice, with fiscal year 2015 sales of 21.1 million gallons.