Scans & Tests
Ophthalmologists and optometrists perform a variety of scans and tests to assess and monitor eye health, diagnose conditions, and determine the most appropriate treatment options. Some of the most popular scans and tests include:
These scans and tests are necessary to detect eye diseases and abnormalities at an early stage, allowing for timely intervention and management. Early detection enables ophthalmologists and optometrists to initiate treatment promptly, potentially preventing vision loss or minimizing its impact. Additionally, regular screenings and monitoring help track disease progression, adjust treatment plans as needed, and ensure optimal eye health and visual function over time. By undergoing these scans and tests, individuals can proactively protect their vision and maintain good eye health for years to come.
1
Optical Coherence Tomography (OCT):
Provides high-resolution cross-sectional images of the retina, optic nerve, and other ocular structures, aiding in the early detection and monitoring of conditions such as macular degeneration, diabetic retinopathy, and glaucoma.
2
Refraction Test
Determines the lens prescription needed to correct refractive errors such as myopia, hyperopia, and astigmatism, enhancing visual acuity.
3
Visual Field Test (Perimetry)
Measures the full extent of peripheral vision, crucial for diagnosing conditions like glaucoma, optic nerve damage, and neurological disorders affecting vision.
4
Funduscopy
Directly examines the retina and optic nerve using a special magnifying lens and light source, aiding in the detection of retinal disorders, optic nerve abnormalities, and signs of systemic diseases.
5
Intraocular Pressure (IOP) Measurement
Evaluates the pressure within the eye, essential for diagnosing and monitoring conditions like glaucoma, where elevated IOP can lead to optic nerve damage and vision loss.
6
Slit-Lamp Examination
Provides a detailed view of the anterior and posterior segments of the eye, facilitating the diagnosis of various eye conditions such as cataracts, corneal abnormalities, and retinal disorders.
7
Color Vision Testing
Assesses the ability to distinguish between colors and detects deficiencies such as red-green color blindness, important for daily activities and certain occupations.
8
Retinal Photography
Captures detailed images of the retina, assisting in the diagnosis and monitoring of retinal diseases such as diabetic retinopathy, age-related macular degeneration (AMD), and retinal vascular disorders.
9
A-scan Ultrasonography
A-scan ultrasound imaging provides crucial information about the internal structures of the eye, particularly the dimensions of the eye's axial length. This measurement is essential for calculating intraocular lens power in cataract surgery and assessing conditions such as glaucoma and retinal detachment.
10
B-scan Ultrasonography
B-scan ultrasound imaging offers a detailed, cross-sectional view of the eye's posterior segment, including the retina, vitreous humor, and optic nerve. It is instrumental in diagnosing and monitoring conditions such as retinal detachment, intraocular tumors, and vitreous hemorrhage.
12
Biometry
Biometry, also known as IOLMaster or optical biometry, is a non-invasive technique used to measure the eye's axial length, corneal curvature, and anterior chamber depth. These measurements are critical for accurate intraocular lens (IOL) power calculation in cataract surgery, ensuring optimal visual outcomes for patients undergoing lens replacement.
13
Corneal Topography
Maps the curvature and shape of the cornea, aiding in the diagnosis of conditions like keratoconus, corneal dystrophies, and irregular astigmatism.
14
Gonioscopy
Examines the drainage angle of the eye to assess the risk of angle-closure glaucoma and other forms of glaucoma.
15
Electroretinography (ERG) and Visual Evoked Potential (VEP)
Measure the electrical responses of the retina and visual pathways, respectively, helpful in diagnosing retinal and optic nerve disorders.
16
Fluorescein Angiography
Involves injecting a fluorescent dye into the bloodstream to visualize blood flow in the retina and choroid, assisting in the diagnosis of conditions such as diabetic retinopathy, macular degeneration, and retinal vascular diseases.
17
Pentacam
Uses rotating Scheimpflug imaging to provide detailed 3D maps of the cornea and anterior segment, valuable for diagnosing corneal ectatic disorders, evaluating corneal thickness, and planning refractive surgeries.