Paradoxical response to photorefractive treatment for postkeratoplasty astigmatism

Fraenkel, Graham; Sutton, Gerard; Rogers, Christopher; Lawless, Michael

doi:10.1016/s0886-3350(98)80144-2

Cited by 12 publications

(2 citation statements)

References 15 publications

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“…However, PRK can cause significant haze in corneal grafts and may induce progression of the astigmatism. [7][8][9] Laser in situ keratomileusis can treat a wider range of post-PKP astigmatism 10,11 ; however, corneal graft thickness and the amount of refractive error may limit the efficacy of the procedure. 12 In addition, severe complications, such as wound dehiscence and flap complications, have been reported.…”

mentioning

confidence: 99%

Intrastromal corneal ring segment implantation for high astigmatism after penetrating keratoplasty

Arriola‐Villalobos¹,

Díaz-Valle²,

Güell³

et al. 2009

Journal of Cataract and Refractive Surgery

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PURPOSE: To evaluate the safety and efficacy of intracorneal ring segments (ICRS) for high astigmatism after penetrating keratoplasty (PKP). SETTING:METHODS: This retrospective noncomparative study comprised eyes with high post-PKP astigmatism (>4.00 diopters [D]), contact lens intolerance, and a minimum follow-up of 24 months who had ICRS (Kerarings) implantation by mechanical stromal dissection. Corrected distance visual acuity (CDVA), refractive astigmatism, spherical equivalent (SE), surgically induced astigmatism (SIA), central corneal curvature, topographic corneal astigmatism, average corneal power, and complications were assessed. RESULTS:The mean CDVA was statistically significantly better postoperatively (0.23 G 0.21) than preoperatively (0.98 G 0.27) (P Z .007); no eye lost CDVA. The mean refractive astigmatism decreased from 6.17 G 1.12 D to 4.04 G 1.67 D (P Z .068) and the mean SE from À3.17 G 5.48 D to À0.12 G 2.40 D (P Z .34). The mean SIA was 4.55 G 2.83 D. The mean central corneal curvature decreased from 46.28 G 1.73 D to 42.09 G 3.20 D (P<.01); the mean topographic corneal astigmatism, from 7.07 G 2.52 D to 4.48 G 2.00 D (P<.05) and the mean average corneal power from 45.92 G 1.59 D to 41.88 G 3.37 D (P<.01); all decreases were statistically significant. One patient developed deep vascularization in the lower temporal stromal channel that resolved after ICRS removal. One patient reported significant night halos.CONCLUSION: Implantation of ICRS for high post-PKP astigmatism reduced corneal curvature and topographic astigmatism, significantly improving CDVA.

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confidence: 99%

Intrastromal corneal ring segment implantation for high astigmatism after penetrating keratoplasty

Arriola‐Villalobos¹,

Díaz-Valle²,

Güell³

et al. 2009

Journal of Cataract and Refractive Surgery

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“…The role of PRK and LASIK in the treatment of refractive errors following PKP has been evaluated. There have been reports of increased incidence of stromal haze, unpredictable refractive results, and photoablation-induced graft rejection with PRK [65][66][67][68][69] Recent interest has focused on the role of LASIK in the management of refractive errors in the PKP patient.…”

Section: Laser Refractive Surgery Following Corneal Transplantationmentioning

confidence: 99%

LASIK and Surface Ablation in the Modern Era: Trends and Novel Applications

Edmonds

Moshirfar

2013

Curr Ophthalmol Rep

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Refractive laser surgery has become one of the most successful and commonly performed elective ophthalmic procedures. Since the introduction of photorefractive keratectomy, followed closely by the advent of laser in situ keratomileusis, the field of laser refractive surgery has continued to rapidly evolve. Surgical techniques are constantly refined to improve patient outcomes and minimize complications, and technology continues to advance to provide more precise and customizable treatment options. New applications of refractive procedures continually emerge in the literature. Breakthroughs in the field have led to novel applications of refractive procedures that may offer options to patients that previously had been considered poor surgical candidates. It is important for the clinician to maintain awareness of the current trends and new developments in refractive surgery to provide appropriate counseling and treatment for their patients.

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Repeat Keratoplasty for Correction of High or Irregular Postkeratoplasty Astigmatism in Clear Corneal Grafts

Szentmáry

Seitz

Langenbucher

et al. 2005

American Journal of Ophthalmology

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Paradoxical response to photorefractive treatment for postkeratoplasty astigmatism

Cited by 12 publications

References 15 publications

Intrastromal corneal ring segment implantation for high astigmatism after penetrating keratoplasty

Intrastromal corneal ring segment implantation for high astigmatism after penetrating keratoplasty

LASIK and Surface Ablation in the Modern Era: Trends and Novel Applications

Repeat Keratoplasty for Correction of High or Irregular Postkeratoplasty Astigmatism in Clear Corneal Grafts

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