What is a Cortical Cataract?
A cortical cataract forms in the cortex — the outer layer of the lens — beginning as small wedge- or spoke-shaped opacities at the edge that slowly work inward toward the center. Because the spokes scatter light, glare from headlights and bright sunlight is often the first complaint, along with hazy or washed-out vision. Cortical cataracts are common with age and somewhat more common with diabetes. When they begin interfering with driving, reading, or daily activities, cataract surgery replaces the clouded lens with a clear implant.
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Cortical cataracts begin as a small spoke-like opacity along the edge of the lens. These cataracts then gradually grow around the edge of the lens, while also slowly moving in toward the center. Cortical cataracts cause light to scatter when it passes through the lens, which decreases the amount of light reaching the retina. This type of cataract can be a hindrance in a dimly lit environment. If left untreated, these symptoms may increase in severity, eventually leading to severe vision loss. Cataract surgery is a commonly performed procedure which will restore your sight. If you have questions about Cortical cataracts or cataract surgery, speak with your eye care professional today.
Medical sources
- aao.org/eye-health/diseases/what-are-cataracts
- nei.nih.gov/eye-health-information/eye-conditions-and-diseases/cataracts
This page and video are for general patient education and are not a substitute for a medical examination, diagnosis, or treatment. Eye conditions vary by individual. For advice about your eyes, schedule an evaluation with May Eye Care Center. In an emergency, call 911.
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