CPT® Code 92230

Fluorescein angioscopy is a specialized ophthalmic procedure that utilizes a modified microscope to examine the capillary vessels within the eye, particularly focusing on the retinal periphery. This technique is essential for assessing and evaluating various lesions that may be present in the eye. The procedure involves the injection of fluorescein dye into a peripheral vein, or alternatively, the application of fluorescence sodium salt externally. An indirect ophthalmoscope is employed to direct light into the eye, allowing the fluorescein dye or sodium to illuminate the vascular areas under examination. This illumination enables the physician to visualize and differentiate the vascular structures in relation to surrounding areas and anatomical landmarks. A cobalt blue filter is often utilized during the procedure, which is meticulously adjusted to ensure that only blue light is used to illuminate the retina. This results in partial fluorescence that is visible through the microscope, producing a blue image that aids in identifying the precise location of any retinal lesions. Additionally, interference bandpass filters, such as barrier filters, may be applied to eliminate all light from the fluorescence except for specific wavelengths, enhancing the clarity of the images obtained. The use of acidic, yellowish-green fluorescent sodium is particularly beneficial for identifying corneal trauma and injuries. Throughout the procedure, digital imaging is generated, allowing for the storage, printing, and transfer of the images. Following the examination, the physician is responsible for providing a comprehensive written interpretation and report detailing the findings from the fluorescein angioscopy.