Data collection will be obtained from the patient, the imaging procedure, and the patient's electronic medical records at the Kresge Eye Institute. Information to be collected includes age, gender, race, visual acuity, and ophthalmologic medical history. The timing and quality of images at different phases of fluorescein angiography will be compared between 500mg and 250mg doses in each eye using objective and subjective measures. To objectively compare the quality of images between the two doses, the level of correlation between images obtained from 250mg and 500mg doses will be measured. Subjective criteria will include grading of the images by a panel of masked retinal surgeons. These objective and subjective criteria will then be used to determine whether any appreciable difference exists in the image quality between 250mg and 500mg doses of intravenous fluorescein given prior to Optos fluorescein angiography.