Ultrasound diagnostics
Ultrasound diagnostics is used to obtain a view of the condition of the interior of the eye and the orbit. Although the fundus and the vitreous body can be well analyzed with a biomicroscopic examination, in cases where the transparency of the optical media is poor (for example, with a cloudy cornea, dense cataract, or hemorrhage into the eye) only ultrasound can be used to determine the condition in the depths of the eye.
Lens biometry
Ultrasound diagnostics is used in cases where diagnoses need to be confirmed (for example, in retinal detachment, choroidal detachment, etc.), thus objectifying the finding. Ultrasound is also used for lens power calculation when preparing patients for cataract surgery (so called biometry). A-scan determines the axial length of the eye, and based on the other entered parameters the program calculates what dioptric power the lens that will be implanted in the eye at the end of the cataract removal procedure should have.
