Signs and symptoms of Signs and symptoms of keratoconus may change as the disease progresses. They include:
- Blurred or distorted vision
- Increased sensitivity to bright light and glare, which can cause problems with night driving
- A need for frequent changes in eyeglass prescriptions
- Sudden worsening or clouding of vision
- The swelling occurs when the strain of the cornea's protruding cone-like shape causes a tiny crack to develop. The swelling may last for weeks or months as the crack heals and is gradually replaced by scar tissue.
- Monocular polyopia (perception of multiple ‘ghost’ images in the eye).
- Streaking and flaring distortion around light sources.
- Marked anisometropia (difference in vision of two eyes).
- Photophobia (increased sensitivity to light).
- Eyestrain, in order to read clearly.
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