Myopia
Myopia is a visual defect that prevents the subject from having clear distance vision. In the presence of this defect, light rays converge in front of the retina, thus forming a blurred image.
According to a quantitative classification of the refractive defect, myopia can be classified into:
- Mild myopia: when the defect is less than 3 dioptres
- Moderate myopia: when the defect is between 3 and 6 dioptres
- High myopia: when the defect exceeds 6 dioptres
Symptoms of Myopia
Individuals suffering from uncorrected or undiagnosed Myopia may experience symptoms such as:
- Reduced vision
- Narrowing of the visual field
- Headaches
- Eye fatigue
- Blurred vision
Causes of Myopia
Myopia is a visual defect that can be caused by several factors, such as:
- The presence of an eyeball longer than normal eyeball, which does not allow objects from a distance to be focused correctly
- An excessively high dioptric power of the crystalline lens which tends to make myopic the subject, altering the overall power of the eyeball
- Hereditary: if there is a myopic family member or relatives, the subject may have congenital myopia, that is, suffer from myopia from birth
Myopia Diagnosis
Myopia is generally diagnosed by an ophthalmologist by means of a thorough examination, during which specific tests are carried out to measure visual acuity and determine the precise dioptres of the refractive defect.
Treatment of Myopia
Once diagnosed, myopia can be corrected:
- Dioptric correction with glasses or contact lenses
- Surgical correction by excimer laser
- Surgical correction by means of phakic intraocular lens implantation (maintaining the natural crystalline lens)
- Surgical correction with replacement of the natural crystalline lens (Refractive lensectomy)
Treatment of Myopia - Recovery Time
Recovery times vary depending on the surgical technique used. For such complex interventions, a period of complete rest of a few days is recommended to facilitate proper functional recovery.
Possible Intervention Techniques
Lasik Refractive Surgery
Lasik Refractive Surgery is a corrective treatment of refractive defects by excimer laser without removal of the corneal epithelium.
PRK Refractive Surgery
PRK Refractive Surgery is a corrective treatment of refractive defects by excimer laser.
Surgery for High Myopia and Astigmatism
Surgical procedures of varying degrees of invasiveness for cases of myopia or other refractive defects associated with high astigmatism.
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