Irregular Astigmatism After Corneal Transplantation—Efficacy and Safety of Topography-Guided Treatment

Purpose. To analyze the efficacy and safety of SCL in patients with corneal cicatricial changes and other concomitant conditions. Material and мethods. The study included 19 patients (20 eyes) with cicatricial deformity of the cornea of various etiology, who were fitted with scleral contact lenses. Results and discussions. The use of SCL is possible in post-traumatic pathology, such as corneoscleral scars with or without aphakia, as well as after keratitis with an outcome in cicatricial deformity, cicatricial changes after a burn. A significant increase in visual acuity compared with spectacle correction has been proven. Depending on the topography of the scar, it is possible to select scleral lenses such as Oblate and Prolate, as well as with different versions of the support zone: both toric and quadratic. Conclusion. Scleral lenses can be successfully used for optical correction in patients with cicatricial changes in the cornea and other concomitant post-traumatic conditions of ineffectiveness of other methods of visual rehabilitation. Key words: cornea, lenses, vision correction, contact lenses, visual rehabilitation, scleral lenses, corneal scars, post-traumatic astigmatism, aphakia, keratitis, toric lenses, quadratic lenses, astigmatism, irregular cornea, regular cornea, regular astigmatism, irregular cornea, irregular astigmatism, prolate, oblate.

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Efficacy and Safety of Corneal Transplantation Using Corneas from Foreign Donors versus Domestic Donors: A Prospective, Randomized, Controlled Trial

Journal of Ophthalmology ◽

10.1155/2015/178289 ◽

2015 ◽

Vol 2015 ◽

pp. 1-10 ◽

Cited By ~ 1

Author(s):

Yingxin Chen ◽

Congling Liao ◽

Minghong Gao ◽

Michael Wellington Belin ◽

Mingwu Wang ◽

...

Keyword(s):

Postoperative Complications ◽

Controlled Trial ◽

Corneal Transplantation ◽

Graft Infection ◽

Efficacy And Safety ◽

Significant Difference ◽

Domestic Group ◽

Corneal Endothelial Cell Density ◽

Donor Corneas ◽

Foreign Donor

Purpose. To assess the efficacy and safety of corneal transplantation using corneas from foreign donors.Methods. One hundred and eight patients needing therapeutic penetrating keratoplasty were randomly divided into 2 groups (54 cases/group): foreign group using foreign donor corneas and domestic group using domestic donor corneas. Clinical outcome and incidence of postoperative complications were compared between groups.Results. No significant difference with respect to the therapeutic outcome and postoperative Best Corrected Visual Acuity (BCVA) and neovascularization by final follow-up was observed between the two groups. The graft thickness in the foreign group was statistically higher than the domestic group at 1 month postoperatively, but not at 3, 6, and 12 months postoperatively. Corneal endothelial cell density in the domestic group was statistically higher than in the foreign group at 3, 6, and 12 months postoperatively. Corneal epithelial abnormalities in the foreign group were significantly higher than that in domestic group. The primary graft failure, incidence of graft survival, and postoperative complications such as immunologic rejection, graft infection, and secondary glaucoma were not significantly different between the two groups.Conclusions. Corneal transplantations using foreign donor corneas are as effective and safe as those using domestic donor corneas.

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Photorefractive Keratectomy in Keratoconus

Case Reports in Ophthalmology ◽

10.1159/000431306 ◽

2015 ◽

Vol 6 (2) ◽

pp. 260-268 ◽

Cited By ~ 7

Author(s):

Deepali Sandeep Tambe ◽

Anders Ivarsen ◽

Jesper Hjortdal

Keyword(s):

Corneal Transplantation ◽

Photorefractive Keratectomy ◽

Efficacy And Safety ◽

Corrected Distance Visual Acuity ◽

Risk Of Progression ◽

Long Term Follow Up ◽

The Mean ◽

Subsequent Risk

Purpose: To assess the efficacy and safety of topography-guided photorefractive keratectomy (PRK) for keratoconus and to estimate the subsequent risk of progression. Methods: This is a retrospective follow-up study. Between 1998 and 2013, 28 eyes of 23 patients (age 17-60) with grade 1-3 keratoconus received topography-guided PRK. Corrected-distance visual acuity (CDVA), keratometry, pachymetry, and corneal topography were assessed before, after 3 months, and at a late follow-up of a median of 7 years after the procedure. Postoperative complications including subsequent keratoplasty were noted. Results: Of the 28 eyes, 5 (18%) had undergone corneal transplantation at a median of 7 years (range 3-10) after PRK. Four eyes were not available for follow-up. In the remaining 19 eyes, CDVA was improved in 16 eyes (84.3%), reduced in 2 eyes (10.5%), and unchanged in 1 eye (5.2%). Thus, average CDVA had improved from 0.49 logMAR before PRK to 0.27 logMAR at 3 months, and to 0.24 at the long-term follow-up. The mean spherical equivalent was reduced from -6.2 to -3.7 dpt after 3 months and to -2.1 dpt at the late follow-up. Similarly, the mean cylinder was reduced from -4.2 to -3.0 dpt after 3 months and at the late follow-up. Conclusion: Topography-guided PRK in keratoconus may be effective for reducing myopia and astigmatism and may offer a temporary or permanent alternative to keratoplasty in contact lens-intolerant keratoconus. In the present study, we found a low risk of keratoconus progression after PRK.

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Descemet membrane endothelial keratoplasty in a patient with iris-fixated intraocular lens and prior radial keratotomy: a case report

BMC Ophthalmology ◽

10.1186/s12886-021-02103-1 ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Anvesh Annadanam ◽

Timothy Soeken ◽

Manjool Shah ◽

Nambi Nallasamy

Keyword(s):

Intraocular Lens ◽

Corneal Transplantation ◽

Anterior Segment ◽

Descemet Membrane Endothelial Keratoplasty ◽

Case Presentation ◽

Radial Keratotomy ◽

Uncorrected Visual Acuity ◽

History Of ◽

Irregular Astigmatism ◽

Fuchs Dystrophy

Abstract Background Anterior segment surgeries such as cataract surgery, intraocular lens (IOL) repositioning, and radial keratotomy (RK) may hasten endothelial dysfunction, particularly in the context of pre-existing Fuchs dystrophy, necessitating future corneal transplantation. Case presentation A 68-year-old woman with a history of RK with associated irregular astigmatism in both eyes and iris-fixated intraocular lens (IF-IOL) in the left eye presented with six months of decreased vision in the left eye. She was found to have Fuchs dystrophy and underwent DMEK surgery. She had an uncomplicated postoperative course, with uncorrected visual acuity improving to 20/20 three months after surgery. Conclusion To our knowledge, this is the first reported case of a highly successful DMEK surgery in a patient with prior RK and IF-IOL.

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Peribulbar block for corneal transplantation: efficacy and safety

10.26226/morressier.58f5b033d462b80296c9deb7 ◽

2017 ◽

Author(s):

Gabriela Gonçalves

Keyword(s):

Corneal Transplantation ◽

Efficacy And Safety ◽

Peribulbar Block

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Keratoplasty for keratoconus: advantages and disadvantages

Russian Ophthalmological Journal ◽

10.21516/2072-0076-2021-14-4-130-136 ◽

2022 ◽

Vol 14 (4) ◽

pp. 130-136

Author(s):

M. M. Bikbov ◽

E. L. Usubov ◽

A. F. Zaynetdinov

Keyword(s):

Corneal Transplantation ◽

Loss Of Vision ◽

Corneal Ectasia ◽

Advantages And Disadvantages ◽

Irregular Astigmatism

Keratoconus is a progressive bilateral corneal ectasia, accompanied by loss of vision due to high irregular astigmatism, which is the leading indication for corneal transplantation. The review presents a variety of surgical corneal transplantation techniques for keratoconus available today and discussed their advantages and disadvantages.

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