central guttae similar to a previously published scale [56]. Cataract was diagnosed based on any discoloration or opacification of the nucleus or cortex or prior cataract surgery, PVD based on the presence of a Weiss ring or a visible posterior hyaloid by examination or ultrasound. Glaucoma was based on optic nerve damage attributed to glaucoma. The other diseases were documented using standard clinical criteria. Primary complex traits and all distinct diagnoses were recorded. Complications of primary diseases, such as retinal edema from branch retinal vein occlusions, were not extracted. Refractive errors were not recorded because of the absence of refractive status prior to cataract surgery and the absence of important refractive components such as axial length. Posterior staphylomata from high myopia were not recorded because of the lack of an ophthalmic ultrasound to record the diagnosis accurately, but myopic degeneration of the RPE and retina was recorded as an accurate marker of myopic degeneration. Secondary diagnoses such as epiretinal membranes from trauma or glaucoma from surgical complications were not included. Drusen insufficient to meet the diagnosis of AMD were not considered a diagnosis. Extraocular conditions such as blepharitis and ptosis were not extracted. Statistical analysis This study was primarily descriptive with the goal of determining the density (number per patient) of complex ocular traits affecting a clinic-based study of patients age 60 or older. Poisson regression models were fit to assess the effect of age and gender on the density of the 10 complex ocular traits in Table 1 and likelihood ratio rests were used to assess the significance of age and gender. 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