Corneal scarring and irregular astigmatism following refractive surgery in a corneal transplant

Aim:To study the safety and efficacy of sutureless femtosecond anterior lamellar keratoplasty (FALK) in patients with corneal stromal opacities.Materials and Methods:Eleven eyes of 11 consecutive patients with corneal stromal opacities involving < 250 μ due to various pathologies were included in the study. Preoperatively, all underwent anterior segment imaging with spectral domain optical coherence tomography (SD-OCT) (Bioptigen Inc., Durham, North Carolina, USA) to measure the depth of the stromal opacity. All patients underwent FALK, and bandage contact lens was placed for a period of 2 weeks. Postoperatively, uncorrected visual acuity, best corrected visual acuity (BCVA), and SD-OCT evaluation were performed.Results:All patients showed significant improvement in BCVA. The mean postoperative BCVA (in decimals) improved from 0.11 ± 0.06 preoperatively to 0.59 ± 0.08. There were no intraoperative or significant postoperative complications that were noticed.Conclusion:FALK is a safe and effective alternative to deep anterior lamellar keratoplasty or penetrating keratoplasty in the treatment of anterior stromal opacities.

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“…Danjoux et al .,[ 10 ] explained that corneal scars may induce irregular astigmatism and loss of visual acuity. Vajpayee et al .…”

Section: Discussionmentioning

confidence: 99%

Sutureless femtosecond anterior lamellar keratoplasty: A 1-year follow-up study

Shetty

Nagaraja

Veluri

et al. 2014

Indian J Ophthalmol

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“…5,10 -15 However, the use of PRK in post-PKP patients is less predictable and less effective than for naturally occurring astigmatism and myopia. 12,16,17 Post-PKP PRK is associated with increased incidence of irregular astigmatism, 18,19 significant regression, and late-developing corneal haze, which limit the effectiveness of PRK after PKP. 11,12,20,21 Although PRK is effective in reducing the spherical equivalent to improve uncorrected and best spectacle corrected visual acuity (BSCVA) and refractive and keratometric astigmatism, there is frequently a decrease in BSCVA of at least one line.…”

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confidence: 99%

Hyperopic Photorefractive Keratectomy With Adjunctive Topical Mitomycin C for Refractive Error After Penetrating Keratoplasty for Keratoconus

Solomon

Donnenfeld²,

Thimons³

et al. 2004

Eye &Amp; Contact Lens: Science &Amp; Clinical Practice

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To our knowledge, this represents the first reported case of the use of MMC to prevent postoperative haze after PRK for PKP in an eye with keratoconus. MMC (0.02%) applied topically to the cornea immediately after PRK is safe and effective to treat a hyperopic refractive error after PKP and prevent postoperative corneal haze formation without the risks of performing a lamellar flap into an ectatic corneal bed.

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