Medical device for implanting an intramellar ring in the correction of ametropias, namely, myopia, myopic astigmatism, keratoconus in patients not tolerating contact lenses, progressive keratoconus, corneal deformation induced by contact lenses (Hartstein syndrome), astigmatism after penetrating keratoplasty, corneal ectasia post Lasik astigmatism, post radial keratectomy and marginal pellucid degeneration

'ametropia':12 'astigmat':16,34,42 'contact':22,30 'corneal':26,38 'correct':10 'deform':27 'degener':49 'devic':2 'ectasia':39 'hartstein':32 'implant':4 'induc':28 'intramellar':6 'keratectomi':45 'keratoconus':17,25 'keratoplasti':37 'lasik':41 'lens':23,31 'margin':47 'medic':1 'myopia':14 'myopic':15 'name':13 'patient':19 'pellucid':48 'penetr':36 'post':40,43 'progress':24 'radial':44 'ring':7 'syndrom':33 'toler':21

FERRARA RING

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