An autorefractor is a computerized instrument that provides an objective measurement of the patient’s refractive error and prescription for glasses. This is achieved by measuring how light is changed as it enters the eye.
At Bigley Eyecare, we’re all about protecting and preserving the health of your entire eye. In addition to primary care optometry, we also offer a complete range of eye care services utilizing the latest eyecare technology.
Computerized Refraction
Automated Perimetry
A perimetry test (visual field test) measures the central and peripheral vision. This test is valuable in monitoring glaucoma and determining visual field loss in brain lesions and strokes.
Tonometry
Tonometry is the procedure used to measure the pressure (IOP) inside the eye. It is an important screening test for glaucoma. At Bigley Eyecare Associates, we measure IOP with Goldmann applanation tonometry, which is considered the gold standard in IOP measurement. When indicated, we use the Tonopen which is a handheld device. Our office does not perform the less accurate and less comfortable “air puff” pressure test.
Slit lamp biomicroscope
A slit lamp biomicroscope is a microscope for the eye. The doctor uses magnification and a narrow beam of light to examine the structures of the eyes in great detail. The instrument may be used to examine the eyelids, cornea, lens, retina, and optic nerves.
Optical Coherence Tomography
Optical Coherence Tomography (OCT) is a sophisticated instrument that measures the layers of the eyes in great detail. It is helpful in detecting swelling in the eye that can occur with macular degeneration and diabetes. It can also detect changes to the optic nerve that can occur with glaucoma.
Pachymetry
A pachymeter measures the thickness of the cornea. It can be used to determine if there is swelling of the cornea. It is also used to screen candidates for refractive surgery such as LASIK and PRK. Pachymetry is also used to detect a risk factor for glaucoma.
Direct and indirect ophthalmoscopy
Ophthalmoscopy is the use of light to look inside of the eye to examine the lens, retina, macula, and optic nerves.
Retinoscopy
A retinoscope is a hand held device used during an eye examination to provide an objective measurement of a person’s refractive error and eyeglass prescription. This is a helpful test in infants, kids, and individuals that can’t otherwise respond to the eye chart.
Digital Snellen Vision Charts
Eye doctors use Snellen eye charts to measure visual acuity. Digital eye charts place the letters and images on a computer screen rather than projected onto the wall. The digital eye charts provide more randomization of the letters and images. Digital eye charts also provide better contrast which results in more consistent and precise measurements.
Digital photography of anterior and posterior segments
Digital photographs of the eye are important to diagnosing and managing ocular disease. Anterior segment photos can be used to evaluate the eyelids, cornea, sclera, and lens of the eye. Posterior segment photos image the retina, macula, blood vessels, and optic nerves. Photos can help detect early evidence of systemic disease such as diabetes, hypertension, and high cholesterol prior to being diagnosed with these conditions.