A simple presentation describing the different causes, features and treatment techniques of myopia. Accompanied with pictures showing the different signs found on examination
8. Most common refractive error
Age of onset
Moderate severity
No degenerative changes
9. Progressive in nature
Age of onset
Severe
Hereditary in nature
10. Degenerative Increase in axial
changes length of
in sclera eyeball
Changes Elongation
in choroid and stretching
and retina of sclera
DECREASE VISION
21. Cornea
For high refractive errors
◦ Clear Lens extraction
◦ Phakic posterior chamber implant
22. Radial Keratotomy
◦ Radius of the curvature of cornea
is reduced (flattened)
◦ Series of radial incisions in
peripheral cornea
◦ Can correct upto 4 diopters
◦ Less popular these days due to
PRK and LASIK
23. Photorefractive keratectomy
◦ Laser procedure
◦ Central corneal surface is ablated
◦ Results in flattening of cornea
◦ A 10um ablation corrects a 1 dipotre of myopia