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Trabeculectomy and the progression of glaucomatous visual field loss. 1977

E B Werner, and S M Drance, and M Schulzer

Twenty-four eyes of 20 patients with chronic open angle glaucoma who had a trabeculectomy were studied retrospectively. Trabeculectomy resulted in a significant lowering of mean intraocular pressures and improvement of pressure control for the group. Progression of visual field defects occurred in all 24 eyes preoperatively, while postoperatively, the fields of 14 eyes showed no change, but the other ten showed further progression. A comparison of the pressures of the eyes showing continued progression after surgery with the eyes showing no further progression revealed no significant difference in the mean preoperative or postoperative pressure or the mean pressure reduction after surgery. Measurements of the quality of the control, however, showed that the quality of pressure control was significantly better in the eyes that did not show progression of field loss postoperatively. Careful postoperative follow-up observation of the visual field remains necessary even after successful surgical pressure reduction.

UI MeSH Term Description Entries
D007429 Intraocular Pressure The pressure of the fluids in the eye. Ocular Tension,Intraocular Pressures,Ocular Tensions,Pressure, Intraocular,Pressures, Intraocular,Tension, Ocular,Tensions, Ocular
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D002908 Chronic Disease Diseases which have one or more of the following characteristics: they are permanent, leave residual disability, are caused by nonreversible pathological alteration, require special training of the patient for rehabilitation, or may be expected to require a long period of supervision, observation, or care (Dictionary of Health Services Management, 2d ed). For epidemiological studies chronic disease often includes HEART DISEASES; STROKE; CANCER; and diabetes (DIABETES MELLITUS, TYPE 2). Chronic Condition,Chronic Illness,Chronically Ill,Chronic Conditions,Chronic Diseases,Chronic Illnesses,Condition, Chronic,Disease, Chronic,Illness, Chronic
D005260 Female Females
D005901 Glaucoma An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed) Glaucomas
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D000368 Aged A person 65 years of age or older. For a person older than 79 years, AGED, 80 AND OVER is available. Elderly
D014129 Trabecular Meshwork A porelike structure surrounding the entire circumference of the anterior chamber through which aqueous humor circulates to the SCHLEMM'S CANAL. Meshwork, Trabecular,Meshworks, Trabecular,Trabecular Meshworks

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