Noncontact tonometry eye sight test results can be obtained within minutes. The patient will be asked to remove contact lenses before the test. The health care provider will use a tonometer to measure the cornea’s resistance. There are many types of tonometry tests, and some are more accurate than others. It is best to discuss your tonometry results with your healthcare provider before the test.
Applanation tonometry is an eye sight test that involves flattening the cornea with a thin instrument and using a slit lamp to view the eye. The test is highly accurate and is sometimes used in conjunction with air-puff tonometry. Another eye sight test known as electronic indentation tonometry uses an electronic device to measure intraocular pressure directly on the cornea. The results are then read on a computer screen.
A high IOP can be an indication of injury or inflammation in the eye. The most common disease associated with high eye pressure is glaucoma. This disease causes the gradual deterioration of the nerve cells in the back of the eye that transmit visual information to the brain. If left untreated, glaucoma can lead to loss of vision or even blindness. Applanation tonometry is a simple eye sight test that can identify glaucoma before symptoms appear.
Optical coherence tomography (OCT) is a modern imaging method that uses a beam of light to capture images of the retina. The pictures produced by OCT are high-resolution and can help diagnose various conditions of the eye. The technology also provides a three-dimensional image of the retina, which can help doctors better understand the cause of an eye disease. Early screening can save a person’s eyesight and slow the process of losing vision.
During a cross-sectional scan image of the retina of a patient of six years of age, researchers found two distinct cavities in the macula region. The larger of the two was temporally oriented, whereas the smaller one was anteroposteriorly.