A specialized camera is then used to take digital photographs of the blood vessels. Fluorescein dye is injected into the vein of your arm, and this yellow dye passes through the blood vessels in your retina. Fluorescein Angiography (FA)įluorescein angiography (FA) is a photographic study of the blood supply to your retina. Multifocal ERG has been recognized as an effective test for many diseases affecting the retina, most notably retinal toxicities like chloroquine (CQ) and hydroxychloroquine (HCQ) retinopathy screening. These tests can help us diagnosis hereditary conditions affecting the retina such as retinitis pigmentosa or Stargardt’s disease. ERG (Electroretinography), EOG (Electrooculography) and MFERG (Multifocal Electroretinography)ĮRG (electroretinography) and EOG (electrooculography) measure the electrical response of the different layers and components of the retina to light and dark stimuli. Patients who have diseases that cause poor night vision (such as retinitis pigmentosa) are unable to see better in the dark over time.ĭark adaptometry can be used in addition to an electroretinogram/electrooculogram (ERG/EOG) in the evaluation of inherited retinal diseases. The technician records the information as a curve on a graph and can compare it to a normal dark adaptation curve. At this time, different intensities of dim light are introduced to you over a period of time, and the you let our technician know when you can see the light. The bright light is then turned off, and you will be in total darkness once again. In dark adaptometry, you will sit in a dark room for two minutes, and then you will be exposed to a bright light for several minutes. It is a useful test for evaluating certain hereditary or genetic retinal diseases since night vision problems are a common complaint in many of these diseases. Anterior high-resolution ultrasound (UBM) can be used to evaluate any abnormalities of the front of the eye, including the cornea, angle of the eye, iris, ciliary body, and lens.ĭark adaptometry is a test to see how well you see in the dark.
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