Eyecare Technology

Heidelberg Retina Tomograph (HRT) Exam

The Heidelberg Retina Tomograph exam takes just a few moments. It is a painless, noninvasive test and dilation of the eye is usually not necessary. The HRT is the most accurate way to follow the progression of glaucoma. Your health care specialist may schedule repeat examinations periodically to track the progress.

Protect Your Vision

Remember, the key to controlling glaucoma is early detection. Protect your vision by being as informed as possible. Know all the risk factors that apply to you. And most importantly, speak with your health care specialist. Discuss your options and if necessary, book your HRT examinations at appropriate intervals. Protect the future of your vision.

Slit- Lamp/ Bio Microscope

An instrument used to examine the anterior segment, or frontal structures and posterior segment of the human eye, which includes the eyelid, sclera, conjunctiva, iris, natural crystalline lens, and cornea. It checks the corneal surface as well as the anterior chamber of the eye.

The binocular slit-lamp examination provides a stereoscopic magnified view of the eye structures in detail, enabling anatomical diagnoses to be made for a variety of eye conditions. This instrument is of critical importance in determining the nature of corneal disease and infection (i.e. "red eye").

Auto refractor

A computer-controlled instrument used during an eye examination to provide an objective measurement of a person's refractive error and prescription for glasses or contact lenses. This is achieved by measuring how light is changed as it enters a person's eye.

The automated refraction technique is quick, simple and painless. This technology is used to provide the starting point for the optometrist in subjective refraction tests. This feedback refines the prescription to one which provides the patient with the best vision. Automated refraction is particularly useful when dealing with non-communicative people such as young children or those with disabilities.


Instrument for measuring tension or pressure. It determines the intraocular pressure (IOP), the fluid pressure inside the eye. It is an important test in the evaluation of patients with glaucoma.


A medical device used to measure the thickness of the eye's cornea. It is used to perform corneal pachymetry prior to LASIK surgery, for Keratoconus screening, LRI surgery and is useful in screening for patients suspected of developing glaucoma among other uses.

Our newer generation of ultrasonic pachymeters work by way of Corneal Waveform (CWF)[3]. Using this technology we can capture an ultra high definition echogram of cornea, think of it as a corneal A-scan. Pachymetry using the corneal waveform allows the user to more accurately measure the corneal thickness, have the ability to check the reliability of the measurements that were obtained, have the ability to superimpose corneal waveform[5] to monitor the change of patients cornea over time, and ability to measure structures within the cornea such as micro bubbles created in the cornea during femto-second laser flap cut.

Humphrey and Octopus visual field instruments

The visual field instruments measure how much of the retina can be reached by light from the external environment. The visual field in this case is all of the external environment that can project light onto the retina. The visual field instruments are used to determine whether the visual field is affected by diseases that cause local scotoma or a more extensive loss of vision or a reduction in sensitivity (threshold). This test is also useful to detect glaucoma and cataracts.

Corneal topographer

Corneal topography is a non-invasive medical imaging technique for mapping the surface curvature of the cornea, the outer structure of the eye to determine the quality of vision. It can assist in the diagnosis and treatment of a number of conditions; in planning refractive surgery such as LASIK and evaluation of its results; or in assessing the fit of contact lenses.

Fundus or Retinal cameras

A fundus camera or retinal camera is a specialized low power microscope with an attached camera designed to photograph the interior surface of the eye, including the retina, optic disc, macula, and posterior pole (i.e. the fundus).The instrument is used for monitoring progression of a disease, diagnosis of a disease (combined with retinal angiography), or in screening programs, where the photos can be analyzed later.

(Source: Wikipedia)