High-Resolution Anterior Segment Optical Coherence Tomography (OCT)

Because light travels faster than sound, OCT produces cross-sectional images of the cornea and anteror segment together with optical backscattering of light. Used to determine the distance to reflective structures within the eye, OCT is usually used for the retina although it can also evaluate any structures in the front of your eye, including the cornea, angle of the eye, iris and lens.


Fluorescein Angiography (FA)

At the Annan Retina eye Center, we use Fluorescein angiography (FA) to take special pictures of your retina. This allows Dr El Annan to get a better look at the blood vessels and other structures in the back of your eye. FA is used to track changes in retina and target treatment areas. The diagnostic treatment can be completed in Dr El Annan’s office and often takes less than 10 minutes.


Fundus Autofluorescence

Fundus autofluorescence (FAF) is a relatively new imaging technique that is used to study retinal diseases and provides information on retinal metabolism and health. FAF is a novel noninvasive imaging technique that we commonly employ at the Annan Retina Eye Center to diagnose and study several pathologies.


Humphrey Visual Field Tests

The Humphrey Visual Field test is the most used field test in the USA and consists of a center fixation light and blinking test lights in your side vision. The visual field shows changes that are not noticed by the patient until the damage is severe.

Glaucoma is a painless process that mostly affects the peripheral, or side vision, first. Other diseases, such as cataract, stroke, macular degeneration and diabetes, can also influence the visual field.


Indocyanine Green Angiography (ICGA)

Indocyanine Green Angiography (ICGA) is a diagnostic procedure that uses ICGA green dye to examine the blood flow in the layer of blood vessels which lies underneath the retina. The dye is injected into the arm and it then passes through the blood vessels of your eye. Photographs are taken to record the blood flow. The actual procedure takes approximately 10-20 minutes and the average length of stay at the Annan Retina Eye Center can be 1-2 hours.


Retinal Photography

Retinal imaging takes a digital picture of the back of your eye. It shows the retina, the optic disk which sends information to the brain and blood vessels.

At the Annan Retina Eye Center, we use digital retinal imaging to assess the health of your retina and help detect and manage such eye and health conditions such as choroidal nevus, diabetes, and macular degeneration. Finding retinal disorders as early as possible is critical to potentially preventing serious disease progression and even vision loss.


Spectral Domain Optical Coherence Tomography (SD-OCT) Imaging

Spectral-Domain OCT imaging include a spectrometer in the receiver that analyzes the spectrum of reflected light on the retina and provides a picture of the layers of your retina.

An OCT scan can help Dr El Annan to detect eye conditions like retinal vein occlusion, age-related macular degeneration and diabetic retinopathy.


Spectralis Multi-Color Imaging

Spectralis Multi-Color imaging utilizes three laser wavelengths simultaneously to provide diagnostic images that show distinct structures at different depths within the retina.

The high-resolution laser highlights structures and pathologies not visible on a normal ophthalmoscopy and fundus photography bringing a new dimension of versatility to ophthalmic imaging.


Ultra-Widefield Photography and Fluorescein Angiography

Ultra-widefield photography is the latest in diagnostic technology and the evolution of fundus fluorescein angiography. With the capability to capture up to 200° of the fundus, in a single image.

There are many advantages to imaging platforms that can capture the peripheral retina that can’t be captured by regular fundus photography.


Ocular Ultrasound

Ocular ultrasound is used to diagnose and treat ocular diseases. The ultrasound technology allows us to see the eyes intraocular structure and can be used on both adults and children.

The technology allows us to diagnose the following

  • Intraocular tumors

  • Vitreoretinal diseases

  • Ocular trauma

  • Inflammatory diseases

  • Optic nerve diseases

  • Intraocular lens position after cataract surgery