Eligibility criteria
Condition
Anterior Ischemic Optic Neuropathy, Ischemic Optic Neuropathy
Sex
Females and Males
Age
18 + years
Inclusion criteria
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- Member of the Ingenix Normative Health Informatics (NHI) Database during 01/01/2003
through 12/31/2007
- 18 years of age or older
- Had at least 183 days of continuous enrollment in the database
- No doctor visits associated with a diagnosis of ischemic optic neuropathy during the
183 days prior to cohort entry
Exclusion criteria
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- Less than 18 years of age
- Less than 183 days of continuous enrollment in the database
- At least one doctor visit associated with a diagnosis of ischemic optic neuropathy
during the 183 days prior to cohort entry