- Accommodative Dysfunction
- Anterior Uveitis
- Color Vision Deficiency
- Computer Vision Syndrome
- Convergence Insufficiency
- Corneal Abrasion
- Diabetic Retinopathy
- Dry Eye
- Eye Coordination
- Floaters & Spots
- Macular Degeneration
- Migraine with Aura
- Ocular Allergies
- Ocular Hypertension
- Ocular Migraine
- Retinal Detachment
- Retinitis Pigmentosa
- Subconjunctival Hemorrhage
- Vision-Related Learning Problems
Causes & risk factors
- Heredity. One in 10 keratoconus sufferers has a close family relative with the disorder.
- Frequent eye rubbing, especially aggressive “knuckling” eye rubbing.
- Having a history of asthma, allergies, Ehlos Danlers syndrome, Down’s syndrome, or retinitis pigmentosa.
In its earliest stages, keratoconus causes slight blurring and distortion of vision and increased sensitivity to glare and light. These symptoms usually appear in the late teens or early 20s. Keratoconus may progress for 10-20 years and then slow in its progression. Each eye may be affected differently. As keratoconus progresses, the cornea bulges more and vision may become more distorted. In a small number of cases, the cornea will swell and cause a sudden and significant decrease in 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. If this sudden swelling does occur, your doctor can prescribe eyedrops for temporary relief.
See a doctor of optometry regularly for corneal curvature measurements and tests for irregular astigmatism.
Eyeglasses or soft contact lenses may be used to correct the mild nearsightedness and astigmatism that is caused by the early stages for keratoconus. Corneal cross-linking surgery is indicated early after diagnosis to stabilize the structure of the cornea and slow progression. As the disorder progresses and cornea continues to thin and change shape, rigid gas permeable contact lenses can be prescribed to correct vision adequately. In most cases, this is adequate. The contact lenses must be carefully fitted, and frequent checkups and lens changes may be needed to achieve and maintain good vision. In a few cases, a corneal transplant is necessary. However, even after a corneal transplant, eyeglasses or contact lenses are often still needed to correct vision.
Corneal cross-linking surgery halts or slows progression and is indicated early after diagnosis, or if later in the course of the disease there is still an increase in the glasses prescription. Intacs intracorneal removable inserts can stretch the cornea to stabilize astigmatism and near-sighted refractive errors. Once the progression has stabilized from life or cross-linking, an implantable Collamer lens surgery can correct higher prescriptions so that glasses or conventional soft contact lenses can be utilized.
Acanthamoeba is one of the most common organisms in the environment. Although it rarely causes infection, when it does occur, it can threaten your vision.
Accommodative dysfunction is an eye-focusing problem resulting in blurred vision—up close and/or far away— frequently found in children or adults who have extended near-work demand.
Amblyopia (lazy eye)
Amblyopia—also known as lazy eye—is the loss or lack of development of clear vision in one or both eyes.