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Mini scleral rigid gas permeable contact lens fitting for visual rehabilitation in keratoconus

Poster Details

First Author: A.Barata PORTUGAL

Co Author(s):    F. Sousa   V. Silva                 

Abstract Details


To report our experience with mini rigid scleral gas permeable (RSGP) contact lenses in patients with Keratoconus and evaluate visual and comfort outcomes.


Teaching hospital.


Noncomparative interventional case series reporting twenty six eyes of fifteen patients with diagnosis of Keratoconus fitted with mini RSGP contact lenses of RoflufoconD, Dk 100 and 15.00mm of diameter. Nine patients were female (60%) and six were male (40%), the mean age was 37�Â�±1.41 (range 13 �â�€�“ 56 years). The average steepest keratometry (Kmax) was 54.9 �Â�± 10.2 D and Amsler-Krumeich Keratoconus Classification distribution stage 1 (11%), 2 (28%), 3 (39%) and 4 (22%). The mean follow-up period was 13.4 �Â�± 1.2 months (range 12�â�€�“14 months) and included serial best corrected visual acuity (BCVA) evaluation and symptoms documentation.


All reported eyes achieved significant improvement of comfort and tolerance with mini RSGP contact lenses use. BCVA improved from�Â� 20/50 (range 20/400 �â�€�“ 20/25) before and 20/25 (range 20/50 �â�€�“ 20/20) after mini RSGP�Â� contact lens fitting (p<0.05). None of the patients discontinued to wear mini RSGP contact lenses.


The present mini RSGP contact lenses have a role in the medical treatment of Keratoconus and should be considered lenses of choice in irregular corneas refractory to conventional optical correction as they improve visual acuity and comfort over other treatments and may allow a delay in surgical options. The authors assume they also can be used in other causes of irregular astigmatism, such as post refractive surgery ectasia.

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