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E. Arimura, C. Matsumoto, H. Nomoto, S. Hashimoto, S. Takada, S. Okuyama, Y. Shimomura; Subjective Perception of Metamorphopsia and Metamorphopsia Score Using M–chartsTM in Patients With Macular Diseases . Invest. Ophthalmol. Vis. Sci. 2006;47(13):5644.
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We developed a metamorphopsia chart (M–CHARTSTM) for the quantification of metamorphopsia and reported its usefulness for several macular diseases. However, it is still not clear if the metamorphopsia score obtained by M–CHARTSTM can really reflects patient’s subjective perception of metamorphopsia in the daily life. In this study, we designed a new metamorphopsia questionnaire for evaluating patient’s subjective severity of metamorphopsia and compared it with the metamorphopsia score obtained by M–CHARTSTM.
Our new metamorphopsia questionnaire contains 14 questions which focus on the symptoms of metamorphopsia in the quality of vision. Using this questionnaire, we evaluated the severity of the subjective perception of metamorphopsia. M–CHARTSTM contain 19 kinds of dotted lines with dot intervals between 0.2° to 2.0° visual angles. For the qualification of metamorphopsia, the minimum visual angle of the dotted line needed to detect metamorphopsia was measured. We compared these two methods in 53 eyes of 53 idiopathic epiretinal membrane (ERM), 22 eyes of 22 idiopathic macular hole (MH) and 30 eyes of 30 age related macular degeneration (AMD) patients.
In all patients, there were significant correlations between the severity of the subjective metamorphopsia perception using our questionnaire and the metamorphopsia score using M–CHARTSTM. If the metamorphopsia scores using M–CHARTSTM were about the same in all 3 disease groups, severe subjective metamorphopsia perception using our questionnaire was observed in patients with MH and AMD than with ERM.
Metamorphopsia score by M–CHARTSTM reflects the subjective perception of metamorphopsia in patients with macular diseases.
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