Cataract

Ocular sonography, also known as ophthalmic ultrasound or B-scan ultrasonography, is a diagnostic imaging technique that utilizes high-frequency sound waves to examine the internal structures of the eye.

B-scan Ultrasonography

“B-scan Ultrasonography, often called just B-scan or Brightness scan, offers two-dimensional cross-sectional view of the eye as well as the orbit. This type of diagnostic tool is most helpful when there is difficulty examining the eye normally.”

Technology:
It uses a handheld probe placed on the closed eyelid. This probe transmits high-frequency sound waves that travel through the eye tissues.
Echoes and Image Formation:
These sound waves bounce off different structures within the eye, and the echoes are picked up by the probe. The strength of the echoes depends on the density of the tissue they encounter..
Creating the Image:
The echoes are then translated into a two-dimensional cross-sectional image on a screen by the ultrasound machine. Denser structures, like the sclera, appear brighter due to stronger echoes, while fluids, like the vitreous humor, appear darker because they reflect less sound.
Benefits of Ocular Sonography:
1. Non-invasive and painless:
Unlike some other diagnostic procedures, ocular sonography is a safe and comfortable test..
2. Penetrates Opaque Media:
Sound waves can pass through cloudy fluids in the eye, such as cataracts or vitreous hemorrhage, which can block a clear view during a regular eye exam. This allows visualization of the structures behind the opacity.
Detailed Information:
The sonography image provides valuable details about the size, shape, and location of various structures within the eye.This information is crucial for diagnosing conditions like:
Retinal detachment exclamation
Tumors
Foreign objects lodged in the eye.
Vitreous abnormalities
Limitations of B-scan:
1. Limited resolution:
While B-scan provides a good overall picture of the eye’s internal structures, it doesn’t offer the same level of detail as some other imaging tests like optical coherence tomography (OCT).
2. Not a functional test: B-scan primarily assesses the eye’s anatomy. It doesn’t directly evaluate the functionality of the retina or other structures.

NC Tonometer

“NC Tonometer is used to perform Tonometry. Tonometry is a quick and simple test that checks the pressure inside your eyes. The results can help your doctor see if you are at risk for glaucoma. The pressure inside your eye is called intraocular pressure (IOP).”

AT Tonometer

“TAT Tonometer is used to perform Tonometry. Tonometry is a quick and simple test that checks the pressure inside your eyes. The results can help your doctor see if you’re at risk for glaucoma. The pressure inside your eye is called intraocular pressure (IOP).”