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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Monocular and binocular reading curves of 20 patients (4 with cataract, 5 with glaucoma, 11 with maculopathy) were recorded by infrared oculography. Reading speed was found to be directly proportional to the visual acuity of the eye tested. However, the same visual acuity in both eyes does not always mean that the subject reads at the same speed with both eyes. For example, paracentral visual field defects impair reading ability and eyes which appear to have good vision may easily become tired. Twelve of 16 examined eyes with maculopathy showed a significant decrease in reading speed during a reading test lasting no more than 2 minutes. In tests of the same duration cataract patients did not tire; their reading speed increased. Binocular vision helps improve reading speed in cases of maculopathy, and even more so in cases of glaucoma with visual field defects. Attention is drawn to Mackensen's suggestion that measurement of reading speed is a valuable function test, and to the fact that in certain cases fatigue of an eye during reading is a new and measurable criterion of the degree of visual impairment.
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PMID:[Decreased reading speed and rapid fatigue as signs of disordered visual function]. 234 15

Impairments in mental status following cataract extraction surgery appear to be a significant clinical problem in the elderly. Despite the prevalence and potential mortality and morbidity, these impairments are frequently undetected. The Mini-Mental State Examination and the Mental Status Questionnaire were evaluated in a population of elderly cataract surgery patients. Although either test can be used to evaluate mental status, the sensitivity and specificity of each must be validated with a larger, controlled sample. The Mental Status Questionnaire was easier to administer, did not appear to induce additional fatigue in patients, and the scores were unaffected by patients' motor and sensory deficits.
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PMID:Two mental status assessment methods: an evaluation. 236 47

The friction force of 5-ml, 2-ml, and 1-ml syringes used for manual aspiration of cortex material in extracapsular cataract extraction (ECCE) were compared. It was found that for a 5-ml syringe the force was 500 g, for a 2-ml syringe it was 250 g, and for a 1-ml tuberculin-type syringe it was only 50 g. The ease and duration of cortex aspiration in 30 cases of ECCE were compared using each of the above syringes partially filled with fluid, connected to a 25-gauge Gill's type cannula, and a closed anterior chamber technique. It was found that with the help of a 1-ml tuberculin syringe, cortex material was removed faster and with less finger fatigue than with the 5-ml or 2-ml syringe.
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PMID:The choice of a syringe for manual cortex aspiration. 369 90

Well-recognised complications are pulmonary fibrosis, cor pulmonale, glaucoma, cataract and nephrocalcinosis causing failure of lungs, heart, vision and kidneys. Less well-recognised is the post-sarcoidosis chronic fatigue syndrome. The afflicted join sarcoidosis patients' associations because of their profound symptoms of myalgia, fatigue, sleep reversal and low-spiritedness. The symptoms are out of proportion to the lack of physical signs and the absence of objective evidence of sarcoidosis. Management includes unremitting sympathy and replenishment of essential neurochemicals.
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PMID:Complications of sarcoidosis. Chronic fatigue syndrome. 817 98

1. Cataract patients received widely differing amounts of information about their surgery and their pre- and postoperative courses. Although most received some information, no patient received what could be considered complete information. 2. Most patients would have liked more specific information about what they could expect and what they could do to take care of themselves after surgery. Some patients were surprised that they could not see perfectly after surgery. Such feelings led to uncertainty and concern about the success of the procedure. 3. The cataract patients had a relatively uneventful postoperative course, complaining little about nausea, vomiting, fatigue, and difficulty moving and sleeping. Although pain generally was rated as low, 15% of patients complained of severe pain on the 1st postoperative day.
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PMID:Follow-up of day-surgery cataract patients. 830 81

alpha-Agonists are a relatively old class of medications, the topical use of which lowers eye pressure. Clonidine was introduced for this use in 1966, brimonidine in 1974, and apraclonidine in 1978. Initial short-term attempts to use clonidine were complicated by problems with systemic hypotension. Apraclonidine is more polar and less lipophilic than clonidine. This probably allows less penetration into both the posterior segment of the eye and systemic circulation, allowing for an excellent therapeutic index. The prophylactic use of apraclonidine (1% and 0.5%) has dramatically changed the safety profile for many anterior segment laser procedures, cataract surgery, and vitrectomy. The role of alpha-agonists in the chronic treatment of glaucoma is still uncertain. Potential benefits of additional lowering of intraocular pressure must be weighed against the following potential disadvantages: tachyphalaxsis, posterior segment vasoconstriction, psychologic depression and fatigue, syncope and systemic hypotension, and a topical allergy-like syndrome.
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PMID:The role of alpha-agonists in glaucoma therapy. 1016 56

Some activities performed by healthcare workers may still involve total or partial exposure to ionising radiation exceeding the limit values. In addition to the appearance of crystalline lens opacities which may lead to rays-cataract, recent studies have indicated possible induction of ocular hypertonia in occupationally exposed subjects. The aim of this study was to establish the actual prevalence of ocular hypertonia and crystalline lens opacities in a group of healthcare workers exposed to ionising radiation. The collected data failed to show significant risk of ocular hypertonia and suggested that crystalline lens opacity was not an important indicator of exposure. Notwithstanding, preventive and periodic (every 5 years) ophthalmologic control may prove helpful for medicolegal purposes. Namely, such control would record congenital crystalline lens opacities in many individuals and would thus rule out unjustified claims of occupational disease due to exposure to ionising radiation. Additionally, ophthalmologic control should focus on different and probably more important ocular risks for the radiologists such as the ocular fatigue resulting from a prolonged use of a video display terminal or other diagnostic screens or electrodiaphanoscopes.
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PMID:Ocular hypertonia and crystalline lens opacities in healthcare workers exposed to ionising radiation. 1056 95

Progressive post-LASIK keratectasia (PPLK) is a progressive deformation of corneal anatomy that occurs rarely but may have severe consequences. Using the scientific literature and new hypotheses, we attempted to determine whether PPLK is a biomechanical result of laser in situ keratomileusis (LASIK), a chronic disease process affecting individuals predisposed to the condition, or a combination of processes. We look at whether the combination of fatigue, specifically a form of dynamic fatigue, and proteolysis provides an environment conducive to the occurrence and progression of PPLK. This review may raise more questions than it answers and in so doing may move us toward a better understanding of this occasionally serious consequence of LASIK.
J Cataract Refract Surg 2002 Dec
PMID:Progressive post-LASIK keratectasia: biomechanical instability or chronic disease process? 1249 19

A 56-year-old woman was evaluated for the surgical correction of hyperopia (+3.0 diopters). Two drops of cyclopentolate 1% were instilled in both eyes for measurement of the cycloplegic refraction and wavefront analysis. Immediately after the second instillation, the patient reported drowsiness, dizziness, nausea, and fatigue. Ten minutes later, stimulatory central nervous system symptoms in the form of restlessness, cheerfulness, and a 20-minute-long roar of laughter were observed, interrupted by a new sedative phase. Basic medical and neurologic examinations were unremarkable except for gait ataxia. Four hours later, the examination was continued uneventfully. As surgical treatment of refractive errors and measurement of cycloplegic refraction using cyclopentolate become more frequent, ophthalmologists should be aware of this unusual acute event.
J Cataract Refract Surg 2003 May
PMID:Acute psychotic reaction caused by topical cyclopentolate use for cycloplegic refraction before refractive surgery: case report and review of the literature. 1278 Dec 95

Allogeneic transplantation of hematopoietic stem cells has potential for cure high risk malignant hematopoietic disorders. Advances in patients' supportive care and in graft versus host disease (GVHD) prevention have improved patient outcome. Although late relapses can occur, they are rare beyond 2 years after transplantation. However a prolonged follow-up is essential because of the risk of long-term complications. Some of them are life threatening (infections, secondary malignancy, chronic GVHD), others affect patient quality of life (chronic GVHD, cataract, osteonecrosis, sterility.). Fatigue, sleep disturbances and sexual dysfunction are the most common transplant related side effects and can also significantly impair patient quality of life. Despite these complications, most patients describe their quality of life as good, and consider that the benefit of the transplantation outweight its late effects.
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PMID:[Bone marrow transplantation for leukemia: long term outcome]. 1295 1


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