What is OCT Optic Nerve Analysis?
OCT (Optical Coherence Tomography) is an examination of the optic nerve, retina and macula using a cross-sectional image created by a laser. The retina is photographed in a cross-sectional manner to produce images in both 2 and 3 dimensions. It can provide a resolution for diagnosis at the level of 10-15 microns and also shows the retina in a manner similar to the image obtained from examining a tissue sample under a microscope. Within the layers of the retina, you can see the retina divided into 10 more sub-layers, including the optic nerve.
In this examination, the thickness of the retinal layer and the thickness of the central retinal image point are also seen to see whether there are any problems or damage from various conditions. Details of the pulling between the junction of the vitreous fluid and the central retinal image point are also seen, including whether the level of fluid คาสิโนออนไลน์ UFABET ฝากถอนรวดเร็ว เริ่มต้นเล่นง่าย in the eye caused by central retinal edema has decreased from treatment or not. All of this is for the purpose of detecting lesions, diagnosing existing diseases, and for precise treatment before the symptoms worsen.
Who should undergo an OCT scan?
- Those under 50 should be checked every 2-4 years.
- People over 50 years of age should have their vision checked every 1-2 years, even if they do not have any abnormal vision symptoms.
- People who are at risk of diabetic retinopathy
- People at risk of glaucoma
The OCT procedure
involves the patient sitting in front of the scanner, just like a normal eye examination, without the need for an injection to dilate the pupils, and without any equipment or radiation touching the eyes. The examiner examines each eye one at a time, taking only about 5 minutes.
Preparation before undergoing an OCT examination
- No special preparation required
Interpretation and Evaluation of OCT Optic Nerve Analysis Results
The doctor will evaluate the results of the examination and diagnose diseases from the images processed by the computer system. It can diagnose many types of eye diseases, such as:
- Macular degeneration, which mostly occurs in the elderly
- Macular degeneration or macular edema caused by various conditions. Diabetes or abnormal or blocked blood vessels in the retina.
- Macular degeneration and retinal detachment
- Chronic inflammatory disease of the iris
- Glaucoma