Answer: D - thinning of the optic disc.
Fundus photography can be used to diagnose eye conditions such drusen, neovascularization, and cotton wool spots. Fundus photography is used to photograph the interior surface of the eye.
Fundus photography involves the use of a retinal camera to photograph the regions of the vitreous, retina, choroid, and optic nerve. The resultant images may be either photographic or digital and become part of a patient's medical record. Fundus photographs are usually taken through a dilated pupil in order to enhance the quality of the photographic record, unless unnecessary for image acquisition or clinically contraindicated.
Fundus photography is indicated to document abnormalities related to disease processes affecting the eye or to follow the progress of the disease and is considered medically necessary for such conditions such as macular degeneration, retinal neoplasms, choroid disturbances, and diabetic retinopathy, or to identify glaucoma, multiple sclerosis, and other central nervous system abnormalities.
In general, fundus photography is performed to evaluate abnormalities in the fundus, follow the progress of a disease, plan the treatment for a disease, and assess the therapeutic effect of recent surgery (e.g., photocoagulation).
