Corneal Tomography
(MedicalProcedures and Examination)
This topic will help you learn about the corneal topography procedure
What isthe corneal topography procedure?
It is: a procedure used to accurately evaluate the corneal surface, and during this examination an image of the cornea is taken using a specialized camera, which measures several dimensions of the cornea, such as: its curvature, and its thickness.
When iscorneal topography performed?
Corneal topography is performed to diagnose, or monitor some diseases that affect the cornea. Among the most common diseases that require this test is keratoconus, where corneal imaging helps doctors diagnose this condition, and track its progression. There are also other reasons to benefit from corneal imaging, such as: examining patients who wish to undergo vision correction surgeries, to ensure they are suitable for these surgical procedures, and the examination may take a few minutes.Keratoconus):
Groups most likely to undergo corneal topography. here
1.Patients with keratoconus (Keratoconus):
Tomography is used to identify abnormalities and abnormal curvatures in the cornea,LASIKand is important for the diagnosis, progression and follow-up of keratoconus disease.
- 2.Patients with unstable vision, after eye surgery:
- After vision correction surgeries, such as: LASIK, the doctor may request a corneal imaging test to evaluate the surface, and make any necessary adjustments.
- 3. Candidates for vision correction surgeries:
- People who wish to undergo corrective vision surgery must undergo this test to determine the suitability of the cornea for surgery, and ensure there are no abnormalities that prevent the success of the procedure.
- 4. People with corneal deformities:
- Any cases related to corneal surface deformities, such as: scars resulting from infection, or injuries require tomographic imaging for evaluation.
- 5. Patients who have undergone corneal transplantation:
- It is used to assess the condition of the transplanted cornea, and determine the extent of its integration, or the presence of any problems that may affect vision.
6. Follow-upafter keratitis:
In cases of severe keratitis that may affect the corneal surface, this test is used to monitor recovery, and evaluate the long-term effects on the surface of the eye.
- Importance of prevention
- Prevention regarding corneal topography is mainly related to maintaining the health of the eye and the cornea, to avoid the need for repeated examination, or advanced treatment. Although this test is safe and is not a surgical procedure, some preventive tips can reduce the need to resort to it, such as:
- Maintaining eye health:
- Avoid excessive exposure to the sun without UV-protective sunglasses.
- Use contact lenses in a healthy way, while adhering to hygiene instructions, to avoid corneal infections or injuries that may require a precise medical examination.
- Avoid using electronic devices for long periods to avoid eye strain.
- Regular eye examination:
- It is important to have periodic eye examinations to detect any early problems in the cornea, or vision. Early examinations can help prevent the deterioration of a condition that may require an advanced test, such as: corneal topography.
- Controlling chronic diseases:
- Chronic diseases, such as: diabetes may affect the health of the eye, and the cornea. Maintaining blood sugar levels within the normal range can reduce the chances of corneal problems that require a topographic examination.
- Avoiding injuries:
- Be careful to protect the eyes duringAdaily or sports activities, especially those thatCmay expose the eye to risk, toEavoid injuries that may require corneal examination.
Propernutrition:
- Eat foods rich in vitamins beneficial to eye health, such as: vitamin A, C, and E may contribute to maintaining corneal health, and reduce the chances of exposure to problems that require advanced examinations.
- How to prepare for a corneal topography test?
- Tell the doctor if you have any health problems that affect the eye.
- Relaxation, and calm knowing that the test is painless, and quick, and usually requires you to focus on a light point inside the device for a few seconds. Therefore, keep calm and try to relax during the process to ensure accurate results.
Refrain from wearing contact lenses for a week, or two weeks before the test because they may affect the test result.
Moisturizing the eye helps ensure that the cornealsurface is moist, and intact which facilitates the imaging process and gives more accurate results.
Frequently asked questions(FAQ):
Are diabetic patients likely to undergo corneal topography?
https://www.ncbi.nlm.nih.gov/books/NBK562157/
https://pep.kkesh.med.sa/?p=1723#:~:text=%
https://www.aao.org/eye-health/treatments/corneal-topography-4
