ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

Background.The non-Hodgkin’s lymphomas (NHL) are a group of neoplasms characterized by proliferation of malignant lymphocytes. Patients with NHL have a wide variety of presenting signs and symptoms, depending largely on the site of involvement and aggressiveness of the disease. Many organs in the body may be affected, including the eye and orbit.Case Report.A 47-year-old male with a 3-year history of stage IV non-Hodgkin’s lymphoma who had undergone recent monoclonal antibody therapy presented with a complaint of blur in the left eye with occasional diplopia. Significant ocular findings of the left eye included ptosis, mild proptosis, increased intraocular pressure, and choroidal folds. Magnetic resonance imaging of the orbit revealed an orbital lymphoma that completely resolved after 2400 rads of external beam irradiation therapy. Eight months later, the patient developed a secondary radiation retinopathy.Conclusion.The prevalence of NHL is on the rise, and orbital involvement may occur at any time during the course of the disease. The standard treatment for non-Hodgkin’s orbital lymphoma is external beam irradiation therapy, although the optimal dose for obtaining local tumor control without complications remains to be determined. Non-Hodgkin’s lymphoma, orbital lymphoma, and various treatment options are discussed.

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

We reviewed the scientific literature on monovision to compare the visual performance of monovision patients with that of others wearing more traditional prescriptions. We found that visual performance of monovision patients was comparable to that of control patients wearing a balanced binocular correction, provided that reading adds were not greater than about +2.5 D, that illumination was photopic, and that stimuli were presented at supra-threshold levels. Under these conditions, monovision patients were satisfied with their perceptual experience and performed within 2 to 6% of balanced binocular control patients on a range of occupational tasks. It is noteworthy that monovision patients had relatively more difficulty with acuity-based tasks than with tasks demanding good depth perception. With reading adds over +2.5 D, at low levels of illumination, or with near-threshold level stimuli, visual performance of monovision patients was reduced compared with controls. Subjectively, under low levels of illumination, monovision patients experienced problems with glare and halos around point sources of light.

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID

摘要:

Introduction.Although many aspects of hydrogel lens wear have been explored over the last 20 years, little attention has been paid to the role of refractive error magnitude in determining patients’ ocular responses or associated contact lens behaviors.Methods.A cross-sectional study was conducted in 32 optometric and ophthalmologic practices. We enrolled 2161 spherical soft contact lens-wearing patients. High ametropes were defined as those with at least ±5.00 D spherical equivalent refractive error in the right eye. Data on current contact lenses, prescribed care regimens, and slit lamp biomicroscopic signs were provided by the eye care practitioners, and information on actual lens care behaviors and attitudes toward contact lens wear were gathered by survey directly from the patients. All differences between high and low ametropes were compared using the chi-square test.Results.Compared with low ametropes, high ametropes were more satisfied with their vision with contact lenses (p < 0.001). More high ametropes wore their lenses on an extended-wear schedule (p = 0.015). Both groups of patients reported a similar degree of lens awareness and lens-associated pain, but fewer high ametropes reported foreign body sensation (p = 0.002). In managing contact lens discomfort, high ametropes were more likely to use an old spare lens (p = 0.01) and more likely to continue wearing their lenses (p = 0.016)—indicators of a propensity for self-management. In response to a damaged lens, high ametropes were less likely to remove both of their lenses (p = 0.002). High ametropes showed more conjunctival staining (p = 0.001) and more corneal scars (p = 0.033). High ametropes also presented with more corneal fluorescein staining (p = 0.001) and more corneal vascularization (p < 0.001). These relations between the degree of ametropia and slit lamp signs of contact lens wear were not significantly affected by daily- vs. extended-wear status.Conclusions.In summary, practitioners should consider the implications of the patient’s degree of ametropia when prescribing contact lenses. These results indicate the need for closer observation and specific advice concerning management of contact lens-related problems when caring for patients with high refractive errors.

ISSN:1040-5488    

出版商:OVID    

年代:2001

数据来源: OVID