IOL Power Calculation After Radial Keratotomy Using the Haigis and Barrett True-K Formulas.

Purpose: To compare the accuracy of intraocular lens (IOL) power calculation in patients with previous radial keratotomy using the Haigis and Barrett True-K formulas.

Methods: In a retrospective cases series of patients with previous radial keratotomy and minimum follow-up of 1.2 months, preoperative data from an IOLMaster 500 or 700 (Carl Zeiss Meditec AG), the IOL power implanted, and the postoperative refraction were used to calculate the refractive prediction error.

Toric Artisan after transepithelial topography-guided photorefractive keratectomy for higher-order aberrations following intrastromal corneal ring segments in keratoconus - Trioptics.

We report a case of a 40-year-old female with keratoconus and high myopia who had previous ICRS implantation in both eyes (OU) and was intolerant to contact lenses. Manifest refraction was -8.50 -1.

Late-onset corneal haze after intrastromal corneal ring implantation in an eye with previous topography-guided PRK.

Purpose: To report a case of late-onset corneal haze 3 months after intrastromal corneal ring segment (ICRS) implantation in an eye with previous transepithelial topography-guided photorefractive keratectomy (TG-PRK).

Observations: A 40-year-old woman with stable keratoconus for 10 years underwent limited TG-PRK with mitomycin C in both eyes for mixed astigmatism. After four years, with atopic symptoms worsening and eye rubbing, the patient presented keratoconus progression in the left eye with increased irregular astigmatism.

Late progressive corneal flattening, haze and visual loss after eccentric crosslinking for Pellucid marginal degeneration.

Purpose: Pellucid marginal degeneration (PMD) is a rare disease that is often mistaken for keratoconus but can similarly be treated with corneal collagen crosslinking (CXL). We report a case followed though 6 years of progressive irregular corneal flattening and thinning in both eyes (OU) after eccentric CXL for PMD.

Observation: A 46-year-old man with bilateral PMD and corrected distance visual acuity (CDVA) of 20/20 (-2.

Focal phototherapeutic keratectomy for the treatment of apical leucoma syndrome.

The following report describes a case of apical leucoma syndrome after hyperopic photorefractive keratectomy following hyperopic laser in situ keratomileusis and the subsequent treatment of this complication with focal phototherapeutic keratectomy. The patient underwent focal transepithelial phototherapeutic keratectomy of 70 mm ablation and 1.5 mm diameter after pupil and ablation offset correction.

Descemet membrane endothelial keratoplasty in multifocal pseudophakic eyes.

Purpose: This report describes the use of Descemet membrane endothelial keratoplasty for the management of endothelial decompensation after multifocal intraocular lens implantation.

Methods: In this retrospective study, we reviewed and assessed the surgical outcomes of 9 patients (9 eyes) who underwent Descemet membrane endothelial keratoplasty after multifocal intraocular lens implantation.

Results: Corneal edema occurred due to Fuchs endothelial corneal dystrophy (n=3), pseudophakic bullous keratopathy (n=3), Descemet's membrane detachment (n=2), and toxic anterior segment syndrome (n=1).

Net technique for intraocular lens support in aphakia without capsular support.

Background: This paper describes a modified surgical technique for intraocular lens implantation in aphakic eyes with no capsular support.

Methods: Retrospective case series. Seventeen eyes of 17 aphakic patients with no capsule support underwent intraocular lens (IOL) implantation using a standardized technique in which a net was created at the ciliary sulcus plane with two threads forming a net pattern.

Removal of Persistent Cellular Deposits After Foldable Iris-Fixated Phakic IOL Implantation.

Purpose: To report a case of severe recurrent cellular deposits after Artiflex intraocular lens (Ophtec B. V., Groningen, The Netherlands) implantation.

Photorefractive Keratectomy With Mitomycin C in Meesmann's Epithelial Corneal Dystrophy.

Purpose: To describe a case of Meesmann's epithelial corneal dystrophy that underwent photorefractive keratectomy (PRK) with mitomycin C.

Methods: Case report.

Results: A 36-year-old woman was evaluated for refractive surgery.

Effect of Topical Tacrolimus in the Treatment of Thygeson's Superficial Punctate Keratitis.

Purpose: To evaluate topical tacrolimus ointment for treating Thygeson's superficial punctate keratitis (Thygeson SPK).

Design: Retrospective interventional case series.

Methods: setting: Institutional practice.

Tacrolimus for the treatment of subepithelial infiltrates resistant to topical steroids after adenoviral keratoconjunctivitis.

Purpose: To describe the use of topical 0.03% tacrolimus in patients with symptomatic corneal subepithelial infiltrates (SEIs) secondary to adenoviral keratoconjunctivitis (AK) that were resistant to tapering of corticosteroid eye drops.

Methods: This was a prospective, nonrandomized, noncomparative interventional case series that included consecutive patients treated with tacrolimus for resistant SEIs after AK.

Moderate keratoconus with thick corneas.

Purpose: To describe two patients with moderate keratoconus and a corneal thickness exceeding 600 μm at the thinnest point.

Methods: Case report.

Results: In the first case, the steepest keratometric power was 51.

Nodular epithelial hyperplasia after photorefractive keratectomy followed by corneal collagen cross-linking.

This study describes a case of nodular epithelial hyperplasia and stromal alterations in a patient with keratoconus who was submitted to topography-guided photorefractive keratectomy (PRK) followed by corneal collagen cross-linking. Debridement of the epithelial nodule was performed. After a 2-year followup, a new topography-guided PRK was indicated.

[Conjunctival autologous transplantation using fibrin glue in primary pterygium].

Purpose: To assess the rate of recurrence and complications after primary pterygium removal with conjunctival autograft using fibrin tissue adhesive. Secondarily, to compare these results with a retrospective series that underwent the same surgery using sutures.

Methods: A hundred and six eyes of 100 patients who underwent surgery with fibrin glue were prospectively studied, while 58 eyes of 51 patients who underwent surgery with sutures were retrospectively evaluated.

[Safety of photorefractive keratectomy with mitomycin-C for the treatment of hyperopia after radial keratotomy].

Purpose: To evaluate the safety of photorefractive keratectomy (PRK) with mitomycin-C (MMC) in eyes with hyperopia after radial keratotomy.

Methods: Sixty eyes of 36 consecutive patients treated with corneal wavefront-guided PRK using an Esiris-Schwind excimer laser were prospectively evaluated. Corneal epithelium was mechanically removed, followed by photoablation and use of 0.

[Corneal wavefront-guided photorefractive keratectomy with mitomycin-C for consecutive hyperopia after radial keratotomy].

Purpose: To assess the efficacy, predictability and stability of corneal wavefront-guided photorefractive keratectomy (PRK) for correcting hyperopia and astigmatism after radial keratotomy.

Methods: In a prospective study, 60 eyes of 36 consecutive patients were treated with corneal wavefront-guided PRK with 0.02% mitomycin-C using an Esiris-Schwind excimer laser.

[Therapeutic contact lenses and the advantages of high Dk materials].

Therapeutic contact lenses are useful in a variety of ocular surface diseases. Their main indications are: to relieve the pain; protect ocular surface; promote corneal healing and epithelial regeneration; seal a leaking corneal wound and deliver ophthalmic drugs on the ocular surface. There are several kinds of lens designs and materials, and their choice is dependent on the specific disease to be treated, the duration of treatment and the physiologic needs of the diseased cornea.

Photorefractive keratectomy and butterfly laser epithelial keratomileusis: a prospective, contralateral study.

Purpose: To evaluate results of two surface excimer laser refractive surgery techniques--photorefractive keratectomy (PRK) and butterfly laser epithelial keratomileusis (butterfly LASEK).

Methods: A prospective, randomized, double-masked study of 51 patients (102 eyes) who underwent laser refractive surgery. One eye of each patient was randomized to be operated with PRK and the fellow eye with butterfly LASEK.

[Topographically-guided photorefractive keratectomy for the management of secondary hyperopia following radial keratectomy].

Purpose: To describe a topographically guided photorefractive keratectomy technique for the management of secondary hyperopia following radial keratectomy.

Methods: A retrospective study was carried out in patients where a topographically guided photorefractive keratectomy technique was performed for the management of secondary hyperopia following radial keratectomy. The patients had preoperatively at least 3 diopters of hyperopia.

[Exudative bilateral retinal detachment and behavior changes in a patient with neurosyphilis: case report].

Purpose: To report a case of bilateral retinal detachment associated with behavior changes.

Results: A 62-year-old, female patient presented agitated, complaining of progressive bilateral low vision for the 3 past months, along with anxiety and behavior changes. On examination, she had visual acuity of light perception in the right eye and conting fingers at 30 cm in the left eye; anterior chamber reaction; bilateral hyperemic and edematous optic disc and bilateral serous retinal detachment, yellow-white subretinal peripapillary plaques and subretinal and intraretinal exudation.

[Congenital anomalies of the optic disc associated with moyamoya disease: case report].

Congenital anomalies of the optic disc can be associated with intracranial vascular abnormalities. We report a 9-year old boy with morning glory disc anomaly in one eye and optic disc and infrapapilar choroidal coloboma in the other. His past medical history was remarkable for a transient ischemic attack.

[Bilateral tonic pupil as the only remaining ophthalmic sign of Lyme disease: case report].

Lyme disease is a multisystemic disorder caused by Borrelia burgdorferi spirochete, transmitted by ticks. Mainly described in the northern hemisphere and rarely in Brazil. The purpose of this report is to describe a patient with Lyme disease who developed bilateral tonic pupil as the only remaining sign.

Iridectomy of the anterior iris stroma using the vitreocutter during phacoemulsification in patients with iridoschisis.

We present a technique to manage iridoschisis. This technique for anterior iridectomy of the affected iris fibers avoids intraoperative obstruction of the phaco tip and prevents postoperative complications such as corneal decompensation and glaucoma. Before the capsulorhexis is created, a vitreocutter is inserted in the anterior chamber and used to cut the iris strands at the site of the iridoschisis, making an anterior sectorial stromal iridectomy and preserving the iris pigment epithelium.