Posters

Long-term control of corneal ectasia with specialised RGP lens in refractive surgical cases and primary keratoconus cases in Asian population

Poster Details

First Author: E.Mai TAIWAN

Co Author(s):    C. Chang                    

Abstract Details

Purpose:

Epidemiology has shown that Keratoconus type of cornea ectasia is more prone to happen in Asian population. We review the prevalence of iatrogenic cornea ectasia in a busy refractive clinic for more than 22 years. We discuss the treatment strategy for these progressive cornea degenerative diseases.

Setting:

Refractive Laser center & Tertiary teaching hospital

Methods:

A chart review of all the refractive surgical case and all those with progressive cornea thinning/change of Kmax that fulfill the criteria of Amsler-Krumeich. KSS (Keratoconus Severity Score) index where use to follow up progression. All post-surgical ectasia case where recruited. We also recruited primary keratoconus case in our clinic from 2008-2018. The progression of their cone and the revision of K value after RGP fitting (published data) are illustrate. A time to RGP failure and specialized RGP lens such as Rose-K or Sclera Lens use are calculated. Topographic/ tomography data of post surgical case and primary keratoconus are followed.

Results:

We discoverd 8 case of post-surgical ectasis. The progression profile of these 8 cases plus 12 other primary keratoconus condition are discussed. Due to lack of government regulation, CXL is not an option in our country, therefore all ectasia patients were funnel into RGP lens and on progression, Sclera lens or Ross-K lens. With recent advancement in RGP designs plus the use of anterior segment OCT corneoscleral profile measurement, better fitting & control of progression has occur in both post-surgical and primary ectasia case. The duration for failure of RGP control cone has greatly delayed in recent 5 years.

Conclusions:

The control of cornea ectasia in both surgical induce ectasia or primary Keratoconus are possible with current up to date specialize RGP lens. Immediate PK can be avoid.

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