Special Testing

DaytonaOptos Daytona

The retina is the only part of the body where blood vessels can be directly viewed. In addition to detecting eye conditions, viewing blood vessels in the retina is also important for detecting evidence of other diseases, including diabetes and hypertension, long before symptoms may be evident elsewhere. The Optos Daytona OptoMap Retinal exam is a fast, painless and comfortable vision exam that makes it easier for our eye care professionals to evaluate the retina. Most eye care exams only look at the front of the eye to identify changes; our eye care exam evaluates the entire eye, including a thorough screening of the retina, to identify potential health problems.

A retinal imaging exam with the Optos Daytona is a fast, painless procedure that is suitable for individuals of all ages. Nothing touches your eye at any time. The Daytona’s new, ergonomic body is increases patient comfort and makes it easier to correctly position the eye. The exam is straightforward: simply look through a small opening in the machine using one eye at a time. This is just like looking through a keyhole. You will see a flash of light that lets you know the image of your retina has been taken.

Optomap’s ultra-wide view helps our eye care team better map your retina. Previous imaging machines only allowed a 45-degree viewing angle of the retina, so only 15 percent of the retina could be viewed. Thanks to the Optos Daytona, a 200-degree retinal image can now be produced, showing 80 percent of the retina. This expanded viewing angle makes it much easier to identify the warning signs of vision problems that could lead to serious vision impairment or even blindness. Most critically, in addition to identifying common eye diseases, retinal imaging can also indicate presence of non-eye or systemic diseases, including hypertension and certain cancers. Early detection means early treatment and proactive prevention to reduce the risk to your sight.

Optos is the leading medical retinal imaging company providing powerful technology solutions to eyecare professionals for improved patient care. The Optos Daytona represents the next generation of ultra-wide retinal imaging machines with a small, sleek design that still provides superior imaging resolution.

 

OCT picOptical coherence tomography (OCT)

Optical coherence tomography (OCT) is an established medical imaging technique that uses light to capture micrometer-resolution, three-dimensional images from within optical scattering media (e.g., biological tissue). Optical coherence tomography is based on low-coherence interferometry, typically employing near-infrared light. The use of relatively long wavelength light allows it to penetrate into the scattering medium. Confocal microscopy, another optical technique, typically penetrates less deeply into the sample but with higher resolution.

Depending on the properties of the light source (superluminescent diodes, ultrashort pulsed lasers, and supercontinuum lasers have been employed), optical coherence tomography has achieved sub-micrometer resolution (with very wide-spectrum sources emitting over a ~100 nm wavelength range).

Optical coherence tomography is one of a class of optical tomographic techniques. A relatively recent implementation of optical coherence tomography, frequency-domain optical coherence tomography, provides advantages in signal-to-noise ratio, permitting faster signal acquisition. Commercially available optical coherence tomography systems are employed in diverse applications, including art conservation and diagnostic medicine, notably in ophthalmology and optometry where it can be used to obtain detailed images from within the retina. Recently it has also begun to be used in interventional cardiology to help diagnose coronary artery disease. It has also shown promise in dermatology to improve the diagnostic process.

 

Humphrey-Matrix-800-224x168Zeiss Matrix Visual Fields

A visual field test is an eye examination that can detect dysfunction in central and peripheral vision which may be caused by various medical conditions such as glaucoma, stroke, brain tumours or other neurological deficits. Visual field testing can be performed clinically by keeping the subject’s gaze fixed while presenting objects at various places within their visual field. Simple manual equipment can be used such as in the tangent screen test or the Amsler grid. When dedicated machinery is used it is called a perimeter.

The exam may be performed by a technician in one of several ways. The test may be performed by a technician directly, with the assistance of a machine, or completely by an automated machine. Machine based tests aid diagnostics by allowing a detailed printout of the patient’s visual field.

Other names for this test may include perimetry, Tangent screen exam, Automated perimetry exam, Goldmann visual field exam, or the Humphrey field exam.