Intrastromal corneal ring segment implantation in 219 keratoconic eyes at different stages

To evaluate the visual and refractive outcomes of intrastromal corneal ring segment (ICRS) in keratoconic eyes at different stages

Alfonso JF, Lisa C, Fernández-Vega L, Madrid-Costa D, Montés-Micó R.

Two hundred and nineteen keratoconic eyes were divided into three groups as a function of stage of keratoconus (stages I, II and III). There were 115 eyes with stage I, 84 eyes with stage II and 20 eyes with stage III. Snellen uncorrected distance visual acuity (UDVA), best corrected distance visual acuity (CDVA), and residual refractive errors analyzed using vector analysis were recorded before surgery and 6 months post-surgery.

For stage I, UDVA changed from 0.26?±?0.19 pre-surgery to 0.58?±?0.30 post-surgery (P?2 lines of CDVA, 25% did not change their CDVA, and 15% lost lines of CDVA. A significant decrease in the spherical equivalent after surgery was found for stages I and II (P?

request an appointment now

Leave us your details

We will contact you

Call us

Or if you prefer, we can call you:

985 240 141

We are in


Avenida Dres. Fernández-Vega 34 33012, Principality of Asturias (Spain)


C / Príncipe de Vergara  131,  28002 , Madrid (Spain)

Cookies allow us to offer our services. By using our services, you agree to our use of cookies.