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Advanced Technology

Digital Retinal Imaging & OCT Scans

We use cutting-edge digital imaging technology to assess your eyes. Many eye diseases, if detected at an early stage, can be treated successfully without total loss of vision. Your retinal Images will be stored electronically. This gives the eye doctor a permanent record of the condition and state of your retina.

This is very important in assisting your Optometrist to detect and measure any changes to your retina each time you get your eyes examined, as many eye conditions, such as glaucoma, diabetic retinopathy and macular degeneration are diagnosed by detecting changes over time.

The advantages of digital imaging include:

  • Quick, safe, non-invasive and painless
  • Provides detailed images of your retina and sub-surface of your eyes
  • Provides instant, direct imaging of the form and structure of eye tissue
  • Image resolution is extremely high quality
  • Uses eye-safe near-infra-red light
  • No patient prep required

Digital Retinal Imaging

Preferred Eye Care, LLC is very excited to announce that each of our 3 offices now has the Topcon 3D OCT-2000.

This instrumentation has two main features.  First, with the Topcon 3D OCT-2000, our eye doctors now have the ability to take a comprehensive 16 mega-pixel picture of your retina, which is the multi-layered sensory tissue lining the back of the eye. The retinal picture is the best way to document eye conditions and diseases, as well as monitor changes inside the eye.  Second, the device is equipped with an Optical Coherence Tomography, also known as an OCT. OCT is a non-invasive technology used for imaging the deeper retinal layers.  This feature has revolutionized the early detection and treatment of eye conditions including macular holes, pre-retinal membranes, macular swelling, and even optic nerve damage in conditions such as glaucoma.

Chances are you are familiar with ultra-sound or CT Scan. The OCT works similar to a CT scan of internal organs. The OCT works in a similar fashion to rapidly scan the eye and formulate a pixel representation of the anatomic layers within the retina.

Our mission is to provide exceptional eye care with the latest in technology.  With the addition of the Topcon 3D OCT-2000 our mission continues to be fulfilled!

Optical Coherence Tomography (OCT)

An Optical Coherence Tomography scan (commonly referred to as an OCT scan) is the latest advancement in imaging technology. Similar to ultrasound, this diagnostic technique employs light rather than sound waves to achieve higher resolution pictures of the structural layers of the back of the eye.

A scanning laser used to analyze the layers of the retina and optic nerve for any signs of eye disease, similar to an CT scan of the eye. It works using light without radiation, and is essential for early diagnosis of glaucoma, macular degeneration and diabetic retinal disease.

With an OCT scan, doctors are provided with color-coded, cross-sectional images of the retina. These detailed images are revolutionizing early detection and treatment of eye conditions such as wet and dry age-related macular degeneration, glaucoma, retinal detachment and diabetic retinopathy.

We carry Topcon OCT scans in our office.

An OCT scan is a noninvasive, painless test. It is performed in about 10 minutes right in our office. Feel free to contact our office to inquire about an OCT at your next appointment.

Visual Field Testing

A visual field test measures the range of your peripheral or “side” vision to assess whether you have any blind spots (scotomas), peripheral vision loss or visual field abnormalities. It is a straightforward and painless test that does not involve eye drops but does involve the patient's ability to understand and follow instructions.

An initial visual field screening can be carried out by the optometrist by asking you to keep your gaze fixed on a central object, covering one eye and having you describe what you see at the periphery of your field of view. For a more comprehensive assessment, special equipment might be used to test your visual field. In one such test, you place your chin on a chin rest and look ahead. Lights are flashed on, and you have to press a button whenever you see the light. The lights are bright or dim at different stages of the test. Some of the flashes are purely to check you are concentrating. Each eye is tested separately and the entire test takes 15-45 minutes. These machines can create a computerized map out your visual field to identify if and where you have any deficiencies.

Our office is proud to use the Humphrey Field Analyzer 3 (HFA3) from ZEISS, in our optometry office.

Non-Contact Tonometer

A tonometer is used to measure intraocular pressure (IOP), which is the pressure inside your eye. A tonometry test is primarily used to check for glaucoma, which is a serious eye disease that can lead to blindness if not treated properly. There are several types of tonometers, including a non-contact tonometer that uses air and does not require eye drops. No matter which type of tonometer your eye doctor uses, the test is painless. We carry the non-contact tonometers in our office.


A pachymeter device is used to measure the thickness of the cornea. This process can help diagnose glaucoma, and used before LASIK surgery. To scan the thickness, the device uses ultrasound technology.


visioffice2 3 500×500The Visioffice is a 3D measuring system. It measures a person's head tilt, eye location, shape, and movement, which enable it to determine the best lenses for that patient. It measures the two eyes individually, which allows for the most precise vision possible, no matter where a patient looks through the lens.

The VisiOffice helps in giving a patient a precise measurement of their eyes and educates and aides patients on frame selection.

The Visioffic makes choosing eyeglasses a completely unique experience.

Topcon Auto Refractor / Auto Keratometer

The auto-refractor is a digital refractor that works much the same way as the old-fashioned phoropter. The big difference is that, instead of the doctor manually clicking through, asking you to decide for yourself which lens is best (which is especially hard when the lenses are very nearly the same!), the auto-phoropter is controlled electronically and measurements are done digitally. This not only shortens the amount of time it takes to decide which lenses will provide you your best vision correction (super helpful when trying to get your little one to stop squirming and co-operate with the process!), but also ultimately results in a more accurate eyeglass or contact lens prescription. Learn more about Eye Emergencies (Pink/Red Eyes)

Breakdown of technology used in our offices:

OCT: Topcon 3D OCT-2000
Auto R/K: Topcon KR8000 P
NCT: Marco Nidek NT-2000Pachymeter:
Palm Scan AP 2000

OCT: Topcon 3D OCT-2000
Auto R/K: Topcon KR8900
NCT: Marco Nidek NT-2000
Pachymeter: Palm Scan AP 2000

New Castle:
OCT: Topcon 3D OCT-2000
Auto R/K: Reichert RK600
NCT: Reichert AT555
Pachymeter: Palm Scan AP 2000