What is Eye Topography?
In this field it refers to measurement of the contour of the front of the eye, the cornea. As the light enters the eye it is bent ,or refracted by the front layer, so it can focus on the back of the eye, the macula. Disruption to the shape of the front of the eye will determine how you can potentially see.
When would it be done?
Generally it is done, when during the course of the exam, we suspect an optical defect of the front of the eye exists. These surface defects can be a normal part of your development, or an indication of corneal anomaly , dystrophy or disease.
Corneal topographic instruments are utilised to measure progression of herniation of the cornea in conditions such as Keratoconus, post corneal graft patients, or most commonly when being fitted for contact lenses.
Frequently Asked Questions
How often should I have an eye exam?
It’s recommended that adults have a comprehensive eye exam every 1-2 years, even if your vision seems fine. For children, their first eye exam should be at 6 months, followed by another at 3 years old, and then annually during school years. If you wear glasses or contact lenses or have a medical condition like diabetes, you may need more frequent exams.
What are the signs that I need glasses?
If you’re experiencing frequent headaches, eye strain, blurry vision (either up close or at a distance), difficulty seeing at night, or squinting to focus, these could be signs that you need glasses. A comprehensive eye exam will determine if corrective lenses are necessary.
What causes dry eyes, and how can I treat it?
Dry eyes can be caused by aging, certain medications, environmental factors, or prolonged screen use. Treatment options include artificial tears, prescription eye drops, and lifestyle adjustments such as taking breaks from screens. An eye doctor can recommend the best course of treatment based on the severity of your symptoms.
Are there ways to prevent common eye diseases like glaucoma or cataracts?
While you can’t always prevent eye diseases, there are steps you can take to reduce your risk. These include wearing UV-blocking sunglasses, eating a healthy diet rich in antioxidants, avoiding smoking, and having regular eye exams to catch any issues early. Managing conditions like diabetes or high blood pressure can also help protect your eye health.
