Posters

Refractive surprise after cataract surgery in a patient with unnoticed form fruste keratoconus

Poster Details

First Author: M.Lecumberri SPAIN

Co Author(s):    C. Moser   M. Garat                 

Abstract Details

Purpose:

To report a case of refractive surprise in a patient with form frustre Keratoconus due to unpredictable change in corneal shape after 2.65 mm uneventful phacoemulsification cataract surgery.

Setting:

Hospital Moises Broggi. Consorci Sanitari Integral. Barcelona (Spain).

Methods:

A 63-year old woman with no history of ammetropy underwent uncomplicated 2.65 mm incision phacoemulsification cataract surgery with IOL implantation. IOL calculation was performed with IOL Master following SRK-T formula. After six weeks of standard postoperative treatment her visual acuity was 20/20 with a refractive error of  +3.25, -1.00 x 75.

Results:

Causes of hyperopic shift after cataract surgery where investigated: neither  subclinical macular edema nor malposition of IOL was detected. It was performed postoperative  biometry to recalculate IOL and it was found a flattenning of 3 diopters in K values after surgery (K1 45,79-K2 46,20 preoperatively corresponding to an IOL of 22.5D to K1 42,61-K2 43,60 postoperatively corresponding to an IOL of 25D). It was not detected any change in axial lenght. Topography (Orbscan Inc) was performed showing parameters compatible with Frustre Keratoconus. Refractive IOL exchange was performed with the new Iol calculation and final refraction was 0,50 x 75

Conclusions:

In corneas with abnormal structural properties as form frustre Keratoconus any corneal incision performed may change K values and corneal shape in an unpredictable manner.

Financial Disclosure:

... gains financially from competing product or procedure, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented, ... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... is employed by a competing company, ... has significant investment interest in a company producing, developing or supplying product or procedure presented