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Zonghui Yan; Rigid gas permeable contact lens for correction of coneal ectasia after corneal refractive surgery. Invest. Ophthalmol. Vis. Sci. 2017;58(8):3058.
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© ARVO (1962-2015); The Authors (2016-present)
To observe the clinical effect of rigid gas permeable contact lens(RGP)for correction of corneal ectasia after laser in situ keratomileusis(LASIK).
We observed 9 eyes of 6 patients(29 to 43 years old) with corneal ectasia after LASIK.Outcomes included postoperative best spectacle-corrected visual acuity(BSCVA), best corrected visual actuity with RGP(BCVA),mean corneal curvature,refraction, base curve of RGP fitting.
One patient had worn RGP lens in the past time,but another five patients never wore it.The mean curvature was within 41.5 to 56D,myopia was within -0.5 to 23D,and the astigmatism was within -0.87 to -6.87D. BSCVA was within 0.1 to 0.6(mean=0.32±0.34), The base curve of lens was 6.3 to 7.8mm,and the diameter was with in 8.5 to 9.6mm.The prescription of RGP lens ranged between -2.5 to -24.5D.BCVA with RGP raised substantially and ranged between 0.4 to 1.0(mean= 0.76±0.42).All patients had adaption period about 1 week at the beginning of wearing RGP lens. During the observation period of 6 months,the patients had good fit, except one patient lost monocular lens.There were no obvious corneal scar, infection, neovascularization and other serious complications.
Corneal ectasia is the most serious hidden complication after LASIK.RGP lens is the main treatment measure if only it is well matched and the satisfactory results can be obtained.
This is an abstract that was submitted for the 2017 ARVO Annual Meeting, held in Baltimore, MD, May 7-11, 2017.
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