How would you describe OCT macula?
How would you describe OCT macula?
Optical coherence tomography (OCT) is an optical analog of ultrasound imaging that uses low coherence interferometry to produce cross-sectional images of the retina. It captures optical scattering from the tissue to decode spatial details of tissue microstructures.
Where are drusen located in OCT?
Drusen are focal deposits of extracellular debris located between the basal lamina of the retinal pigment epithelium (RPE) and the inner collagenous layer of Bruch membrane found in normal aged human eyes and in eyes with age-related macular degeneration (AMD).
What are the OCT features of dry AMD?
Non-exudative (dry) AMD
| Exam appearance | OCT appearance |
|---|---|
| Drusen (yellow-appearing accumulations of extracellular lipofuscin-containing debris) | Drusen appear as lumps underneath the RPE |
| Pigmentary changes (hypo- or hyper-pigmentation of the retina) | No classic OCT appearance |
Is drusen serious?
Developing a few small drusen as you get older is usually a harmless and normal part of aging, but having large numbers of drusen could mean you have AMD. Over time, AMD can degrade your central vision, making it difficult to see things that are right in front of you.
How is drusen detected?
Drusen symptoms and diagnosis Drusen can be seen during a dilated eye exam using an ophthalmoscope, a device that allows the doctor to see the retina and back of the eye. If your eye doctor detects many soft drusen on an eye exam, they’ll likely want to run additional tests for age-related macular degeneration.
What are hard drusen?
Hard drusen are small and round, have well-defined borders and are often spread out. They are common as people age. Soft drusen are larger, have indistinct borders and tend to cluster together. Although both types of drusen should be monitored, hard drusen don’t usually cause vision problems.
What does geographic atrophy look like on OCT?
In high resolution OCT the atrophic area shows hyperreflective clumps at different levels, segmented plaques of the outer band and elevations with variable reflectivity(41).. In the perilesional area there are elevations of the outer retinal layers, as well as thickening of outer hyperreflective band.
How do you increase retinal thickness?
How to Improve the Health of the Retina
- Healthy and balanced diet.
- Avoiding unhealthy foods and drinks.
- Drinking plenty of water.
- Regular exercise.
- Wearing sunglass when out in the sun.
- Quitting smoking.
- Wearing eye protection.
- Regular eye check-up.
How are drusen characterized in age related macular degeneration?
Drusen are classified histologically as hard formations, defined as small hyaline deposits with delimited margins that are considered age-related low-risk changes, and soft drusen, which are deposits of granular or amorphous material considered to be precursors of AMD. Drusen can progress to an atrophic form (dry) or exudative form (wet) of AMD.
When to suspect macular dystrophy in dry AMD?
Color vision is generally more notably reduced in macular dystrophies, particularly those specifically affecting cone function, such as cone dystrophy.1 Serial color vision testing may assist in monitoring functional disease progression in any maculopathy. Case 1. Drusen in Dry AMD Patient These OCT images show typical drusen in dry AMD.
Can a macular coherence tomography ( OCT ) image be read?
Interpreting an abnormality on a macular optical coherence tomography (OCT) image can be daunting for practitioners relatively new to OCT.
What should a normal macular Oct look like?
Use it as a piece of the puzzle and analyze it by correlating it to the patient’s history, clinical exam and other ancillary tests when appropriate. A normal macular OCT should look as familiar as the back of your hand; however, remembering what structure each band on the image represents is sometimes less than second nature.
How would you describe OCT macula? Optical coherence tomography (OCT) is an optical analog of ultrasound imaging that uses low coherence interferometry to produce cross-sectional images of the retina. It captures optical scattering from the tissue to decode spatial details of tissue microstructures. Where are drusen located in OCT? Drusen are focal deposits of extracellular…