Deep research and expert guides on maintaining your visual health.
Capturing slow changes in eye pressure and fields (monitoring). A recent study (the ADAGES group) looked at long-term glaucoma data and found that...
OCT screening stands for using optical coherence tomography to take detailed pictures of the eye’s internal structures, especially the retina and optic nerve. This technique uses light waves to create clear cross-section images, like slices, that show layers of tissue in high detail and without touching the eye. It is quick, painless, and noninvasive, and it can reveal early changes that are not visible with a standard eye exam. Doctors use these images to detect conditions such as glaucoma, macular disease, and swelling or thinning of retinal layers long before symptoms appear. Because it shows structural changes, OCT screening is particularly useful for tracking disease progression over time and deciding whether treatment needs to be started or changed. It is not a stand-alone test: the images are interpreted along with vision tests and pressure measurements to get a complete picture of eye health. Limitations include image artifacts, differences between machines, and the need for skilled interpretation, but overall it is a powerful tool for early detection. Regular screening can lead to earlier treatment and better chances of preserving vision, which is why it is commonly used in eye clinics.
