Earliest Symptoms of Diseases of the Macula

Amsler, Marc

doi:10.1136/bjo.37.9.521

Cited by 169 publications

(116 citation statements)

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“…The Amsler chart was described as a simple and rapid test for the evaluation of the macular visual field 2 , although recent studies have demonstrated low sensitivity and specificity of the test 1 , which may explain the absence of fundoscopic lesions even in students that presented Amsler chart alterations. There was no correlation between T. gondii serology and Amsler chart findings.…”

Section: Resultsmentioning

confidence: 99%

Toxoplasma antibody and stool parasites in public school children, Rolândia, Paraná, Brazil

Giraldi

Vidotto

Navarro

et al. 2002

Rev. Soc. Bras. Med. Trop.

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Section: Resultsmentioning

confidence: 99%

Toxoplasma antibody and stool parasites in public school children, Rolândia, Paraná, Brazil

Giraldi

Vidotto

Navarro

et al. 2002

Rev. Soc. Bras. Med. Trop.

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“…Amsler charts have been widely used for detecting metamorphopsia, 3 but it is difficult to quantify the severity of the metamorphopsia. Some investigators have evaluated metamorphopsia by the numbers of distorted squares on the Amsler charts 4 or a laser grid generated by a scanning laser ophthalmoscope, 5 but these findings represent the range rather than the severity of the metamorphopsia.…”

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confidence: 99%

Time Course of Changes in Metamorphopsia, Visual Acuity, and OCT Parameters after Successful Epiretinal Membrane Surgery

Kinoshita

Imaizumi

Okushiba

et al. 2012

Invest. Ophthalmol. Vis. Sci.

123

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PURPOSE.To follow the changes in the metamorphopsia, visual acuity, and OCT parameters after epiretinal membrane (ERM) removal.METHODS. The study included 49 eyes of 49 patients with an ERM who underwent vitrectomy and membrane peeling. The changes in the best-corrected visual acuity (BCVA), metamorphopsia, and central foveal thickness (CFT) were evaluated at baseline and 1, 3, 6, 9, and 12 months postoperatively. M-CHARTS were used to quantify metamorphopsia. RESULTS.The mean BCVA, metamorphopsia scores for horizontal lines (MH) and vertical lines (MV), and CFT improved significantly at 12 months after surgery (P < 0.001). The baseline BCVA, MH score, and MV score were significantly correlated with the corresponding BCVA, MH score, and MV score at 12 months after surgery (P < 0.01). The MH and MV scores at 12 months was significantly correlated with the BCVA at 12 months (P < 0.01), and the baseline MV score was significantly correlated with the BCVA at 12 months (P < 0.05). The MH score but not the MV score was significantly correlated with the CFT at baseline and 12 months (P < 0.05).CONCLUSIONS. The preoperative BCVA, MH score, and MV score were prognostic factors for the corresponding postoperative BCVA, MH score, and MV score. These results suggest that surgery for ERM should be considered before severe reduction in the BCVA or the degree of metamorphopsia. In addition, the preoperative MV score was a prognostic factor for postoperative BCVA. The MH score but not the MV score was correlated with the CFT preoperatively and postoperatively. (Invest Ophthalmol Vis Sci. 2012;53:3592-3597) DOI:10.1167/ iovs.12-9493 P atients with an idiopathic epiretinal membrane (ERM) often suffer from metamorphopsia, which impairs the quality of vision even when the conventional visual acuity is relatively good. To resolve these visual difficulties, these eyes commonly undergo vitrectomy with the removal of the ERM. Despite a successful removal of an ERM and an improvement of the visual acuity, the patient's quality of vision may not be completely normal mainly because of residual metamorphopsia. Thus, it is essential to evaluate the visual outcome in terms of the quality of vision as well as by the visual acuity. Okamoto et al.1,2 demonstrated that the changes in metamorphopsia but not the visual acuity were significantly associated with changes in the 25-item National Eye Institute Visual Function Questionnaire composite score on the quality of vision after ERM surgery. Therefore, assessing not only the visual acuity but also the severity of metamorphopsia is important when deciding the timing of the ERM surgery and for evaluating the postoperative quality of vision.Amsler charts have been widely used for detecting metamorphopsia, 3 but it is difficult to quantify the severity of the metamorphopsia. Some investigators have evaluated metamorphopsia by the numbers of distorted squares on the Amsler charts 4 or a laser grid generated by a scanning laser ophthalmoscope, 5 but these findings represent the range rather than the ...

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“…The Amsler grid was designed to specifically test visual field defects in the central 10°. 10,11 An inexpensive and rapid method, the Amsler grid test utilizes a suprathreshold target to analyze the central 10°. It is good for detecting metamorphopsia but is not sensitive for the detection of relative scotomas.…”

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confidence: 99%

Scotomas of Age-Related Macular Degeneration Detected and Characterized by Means of a Novel Three-Dimensional Computer-Automated Visual Field Test

Nazemi¹,

Fink²,

Lim³

et al. 2005

Retina

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Purpose:We used the recently devised three-dimensional computer-based threshold Amsler grid test to acquire and identify typical patterns of visual field defects (scotomas) caused by age-related macular degeneration (AMD).Methods: Patients with AMD traced on a computer touch screen the borders of those areas on an Amsler grid that were missing from their field of vision. Scotomas were repeatedly outlined and recorded at different grid contrast levels. The resulting threedimensional "hole" in the central 25°of the visual field was further characterized by its slope, location, shape, and depth. The results were compared with fundus photographs and fluorescein angiograms.Results: Twenty-five patients and 41 eyes were examined. The three-dimensional depictions consistently demonstrated central scotomas with "scallop"-shaped borders and steplike patterns, with either steep slopes or a combination of steep and shallow slopes. The steep slopes corresponded to nonexudative AMD, while the shallow slopes indicated exudative AMD. Conclusion:The three-dimensional computer-automated threshold Amsler grid test may demonstrate characteristic scotoma patterns in patients with AMD that conform to the respective fluorescein angiograms. The test shows promise as an effective tool in accurately evaluating, characterizing, and monitoring scotomas in patients with AMD. It may have the potential as a screening tool for the early diagnosis of AMD.

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Earliest Symptoms of Diseases of the Macula

Abstract: FROM whichever side it is approached, the question of diseases of the macula presents great interest and merits attention, because macular diseases are both common and serious.Diseases of the macula are common.

Cited by 169 publications

References 5 publications

Toxoplasma antibody and stool parasites in public school children, Rolândia, Paraná, Brazil

Toxoplasma antibody and stool parasites in public school children, Rolândia, Paraná, Brazil

Time Course of Changes in Metamorphopsia, Visual Acuity, and OCT Parameters after Successful Epiretinal Membrane Surgery

Scotomas of Age-Related Macular Degeneration Detected and Characterized by Means of a Novel Three-Dimensional Computer-Automated Visual Field Test

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