bio ring


Intrastromal Corneal Ring

BIORING is implantable device for the correction of surface irregularities of cornea & reduction of refractive errors associated with keratoconus & other corneal ectasia.

BIORING implantation is indicated to improve the patient’s visual acuity, reduce or eliminate the refractive error & stabilize cornea which avoids or delays need of corneal transplantation.


Delaying or eliminating needs of corneal transplantation: BIORING delays or eliminates need of corneal transplantation

Variable Arc lengths & thicknesses: Different Arc lengths & thicknesses offer options to surgeon to select segment as per need of the patient

Greater refractive correction: BIORING corrects low, moderate & high degrees of myopia and astigmatism

User friendly online calculator: Appropriate segment for particular patient can easily be found out using


Thickness150, 200, 250, 300, 350 Microns
Diameter5.0 mm
Arc Angle90°, 120°, 160°, 210°, 320°


Keratoconus with poor BSCVA and intolerance to the use of contact lenses

Progressive keratoconus

Pellucid marginal degeneration

Post LASIK ectasia

Irregular astigmatism

High astigmatism secondary to penetrating keratoplasty

Post trauma corneal irregularities