Rare isolated myopia is a condition in which a person has a significantly higher degree of nearsightedness than is typical. It is caused by an abnormally high degree of curvature in the cornea or lens of the eye, which causes light to focus in front of the retina instead of directly on it. This results in blurred vision at a distance. Rare isolated myopia is usually diagnosed in childhood and can progress over time. Treatment typically involves corrective lenses or refractive surgery.

The most common symptom of rare isolated myopia is Blurred vision at a distance. Other symptoms may include headaches, eyestrain, squinting, and difficulty seeing in dim light. People with rare isolated myopia may also experience difficulty seeing objects that are close up, such as when reading or using a computer.

The exact cause of rare isolated myopia is unknown, but it is believed to be a combination of genetic and environmental factors. Genetic factors may include a family history of myopia, while environmental factors may include prolonged near work, such as reading or using a computer, and inadequate outdoor activity. Other possible causes include excessive use of digital devices, poor nutrition, and excessive eye strain.

1. Eyeglasses: Eyeglasses are the most common treatment for rare isolated myopia. They can help correct vision by refocusing light onto the retina.

2. Contact Lenses: Contact lenses can also be used to correct vision in cases of rare isolated myopia. They are more comfortable than eyeglasses and can provide better vision.

3. Refractive Surgery: Refractive surgery is a surgical procedure that can be used to correct vision in cases of rare isolated myopia. It involves reshaping the cornea to correct vision.

4. Orthokeratology: Orthokeratology is a non-surgical procedure that can be used to correct vision in cases of rare isolated myopia. It involves wearing special contact lenses overnight to reshape the cornea and improve vision.

5. Vision Therapy: Vision therapy

1. Family history of myopia
2. Prolonged near work
3. Low levels of outdoor activity
4. High levels of education
5. Ethnicity (Asian populations are more likely to have myopia)
6. Gender (females are more likely to have myopia)
7. Age (myopia is more common in children and adolescents)
8. Refractive errors (astigmatism, anisometropia, and aniseikonia)
9. Genetic mutations (such as PAX6, CHX10, and COL2A1)
10. Systemic diseases (such as diabetes, thyroid disease, and hypertension)

There is no cure for rare isolated myopia, but there are treatments available to help manage the condition. These include corrective lenses, such as glasses or contact lenses, and refractive surgery. Additionally, medications such as atropine eye drops may be prescribed to slow the progression of myopia.