Journal
RETINA-THE JOURNAL OF RETINAL AND VITREOUS DISEASES
Volume 37, Issue 6, Pages 1043-1048Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/IAE.0000000000001348
Keywords
myopic maculopathy; pathologic myopia; posterior staphyloma; axial length
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Funding
- Japanese Society for the Promotion of Science
- Grants-in-Aid for Scientific Research [15H04993] Funding Source: KAKEN
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Purpose: Despite being a major cause of visual impairment worldwide, pathologic myopia has not been clearly and consistently defined. This lack of a standardized definition has made comparisons among epidemiological studies difficult. Therefore, the purpose of this review was to summarize the definitions of pathologic myopia. Methods: A literature search was conducted of Pubmed to identify reports presenting definitions of pathologic myopia. Results: Although cut-off values for refractive error and increased axial length have been used in some studies, a definition based solely on such values is considered to just show a 'high degree of myopia'. Similarly, the presence of myopic fundus lesions in addition to a high degree of myopia has been used to define pathologic myopia; however, such lesions often develop with age and they are not characteristic of pathologic myopia. Conclusion: So, what is pathologic myopia? This review covers the various proposed definitions for pathologic myopia, and describes its major features such as posterior staphyloma, variation in axial length, and the presence of myopic maculopathy. Some unanswered questions that serve as signposts to areas of interest for future research have also been discussed.
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