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Y. F. Abdalla, A. F. Elsahn, E. J. Cohen; SynergEyes Lenses for Keratoconus. Invest. Ophthalmol. Vis. Sci. 2008;49(13):4326.
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© ARVO (1962-2015); The Authors (2016-present)
To discuss the results of fitting SynergEyes hybrid contact lenses (SynergEyes Inc, Carlsbad CA) for keratoconus and pellucid marginal degeneration.
The charts of patients fitted with SynergEyes lenses during the first 7 months the lens was available in the cornea service at Wills eye hospital between 8/3/2006 and 3/5/2007 were retrospectively reviewed. The flat and steep curvatures on corneal topography were recorded. SynergEyes contact lens data included initial and final base curves dispensed, flat/steep skirt and power .The outcome data included visual acuity, duration of follow up and complications. Reason for contact lens discontinuation was documented.
61 eyes of 44 patients were reviewed all were diagnosed with keratoconus except 3 eyes that had pellucid marginal degeneration. The mean age of patients was 40+12.6; the mean follow up period was 5.4+4.3 months. 19 eyes achieved visual acuity ranging from 6/6 to 6/7.5, 38 eyes achieved 6/9 to 6/12, 3 eyes had visual acuity of 6/15 to 6/30 and only one eye had a 6/60 visual acuity .The total number of refits was 22 eyes, total base curve changes was 17, 9 tighter, 8 looser; 5 eyes had skirt changes only . 13 eyeshad power changes. The discontinuations were 18 eyes, 5were refit, 14 resumed. The complications documented were as follows: 12 eyes with GPCs/allergies, 5 DES, 1 corneal abrasion, 1 torn contact and one eye had a small corneal ulcer less than 1 mm, edema and pannus. A total of 9 eyes stopped the contact and were considered failures 5 were due to discomfort 1 of which underwent PK, 2 are considering PK, 2 resumed in soft perm and one went back to RGP. 3 failures were due to unsatisfactory vision 2 went back to RGP and one stayed without correction.
SynergEyes is a promising alternative to RGP in keratoconus and PMD patients who are intolerant or cannot be fit with rigid gas permeable lenses.
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