Signs. Early signs of Keratoconus include: Asymmetric refractive error with high or progressive astigmatism; Keratometry showing high astigmatism and irregularity (the axis that does not add to 180 degrees) Scissoring of the red reflex on retinoscopy

2020年9月1日 · Keratoconus (KC) is a bilateral, progressive, noninflammatory ectatic condition in which there is conical protrusion of a thinned central cornea. Patients experience significant visual impairment from the resultant irregular astigmatism and high myopia.

2023年10月30日 · What are the symptoms of keratoconus? The main symptoms of keratoconus include: Gradually worsening vision in one or both eyes. (Generally, keratoconus affects both eyes.) Having double vision when you look out of just one eye. Seeing halos around bright lights. Being sensitive to light. (The term for this sensitivity is photophobia.)

2024年4月12日 · Key clinical features indicative of keratoconus include: Difficulty with visual correction: Progressive myopia and astigmatism contribute to challenges in spectacle correction and contact lens fitting as the disease advances.

2023年4月5日 · 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.

2024年10月31日 · Keratoconus often affects both eyes, and can lead to very different vision between the two eyes. Symptoms can differ in each eye, and they can change over time. In the early stage, keratoconus symptoms can include: mild blurring of vision; slightly distorted vision, where straight lines look bent or wavy; increased sensitivity to light and glare

2023年1月4日 · Diagnosis can be confirmed with corneal topography or tomography, which may reveal inferior corneal steepening (approximately 80% of keratoconus cases), central corneal astigmatic steepening...

2024年11月13日 · Keratoconus is a condition in which your eye's cornea is unable to hold its round shape. This can make your vision less clear. WebMD explains how to recognize and treat the condition.

2024年5月15日 · Keratoconus is an eye disease characterized by thinning and bulging of the cornea, the clear front surface of the eye. Keratoconus occurs when the collagen tissue that makes up the cornea weakens. As a result, the cornea begins to stretch and thin, becoming cone-shaped rather than dome-shaped.

orders require careful differentiation. Forme fruste kera toconus (subclinical KC) is an early, asymptomatic form of the disease with no apparent clinical signs; it can be diagnosed only through analysis of corneal morphology.3 Pellucid marginal degeneration (PMD) is a …