Retinal changes in children and adolescents with sickle cell disease attending a paediatric hospital in Cairo, Egypt: risk factors and relation to ophthalmic and cerebral blood flow.

Background: Sickle cell disease (SCD) is characterised by occlusion of small blood vessels. This study aimed to assess retinal changes in patients with SCD and its correlation with time-averaged mean flow velocity (TAMV) in middle cerebral arteries (MCA) and ophthalmic arteries (OA).

Methods: Sixty SCD patients (aged 3-18 years) attending a paediatric hospital in Cairo, Egypt, during March 2010 to November 2011, were compared with 30 healthy controls.

Refractive outcomes and quality of vision related to an outbreak of diffuse lamellar keratitis.

Purpose: To report the impact on visual function and corneal aberrations during an epidemic of diffuse lamellar keratitis (DLK).

Methods: A retrospective, comparative, and consecutive case-control study was performed, involving 418 eyes operated between March and October 2007 in the refractive surgery unit of one center. Eyes were separated into groups: group 1 (DLK group) included 209 eyes that presented with DLK after LASIK and group 2 (control group) included 209 unaffected, consecutive eyes operated from the beginning of the outbreak.

Corneal aberrometric and refractive performance of 2 intrastromal corneal ring segment models in early and moderate ectatic disease.

Purpose: To evaluate and compare visual, refractive, and corneal aberrometric outcomes after implantation of 2 types of intrastromal corneal ring segments (ICRS) in eyes with early to moderate ectatic disease.

Settings: Vissum Corporation-Instituto Oftalmológico de Alicante, Alicante, Spain.

Methods: This retrospective analysis comprised consecutive eyes with grade I or grade II corneal ectasia (keratoconus, pellucid marginal degeneration, ectasia after laser in situ keratomileusis) that had Intacs (Group I) or KeraRings (Group K) ICRS implantation using femtosecond technology.

Microincision cataract surgery with toric intraocular lens implantation for correcting moderate and high astigmatism: pilot study.

Purpose: To evaluate the results of microincision cataract surgery (MICS) with toric intraocular lens (IOL) implantation to correct moderate to high astigmatism in patients with cataract.

Setting: Vissum-Instituto Oftalmológico de Alicante, Alicante, Spain.

Methods: This prospective nonrandomized study comprised patients with visually significant cataract and moderate to high astigmatism (>2.

Refractive and aberrometric outcomes of intracorneal ring segments for keratoconus: mechanical versus femtosecond-assisted procedures.

Objective: To compare visual, refractive, and corneal aberrometric outcomes in keratoconic eyes implanted with intracorneal ring segments (ICRS) implantation using either a mechanical or a femtosecond laser-assisted procedure.

Design: Retrospective, consecutive case series.

Participants: A total of 146 consecutive eyes of 106 patients with the diagnosis of keratoconus (68 unilateral and 39 bilateral) were included.

Intracorneal ring segment implantation in corneas with post-laser in situ keratomileusis keratectasia.

Purpose: To evaluate the refractive and aberrometric changes in corneas with post-LASIK keratectasia implanted with intracorneal ring segments (ICRS) during a 2-year follow-up.

Design: Retrospective, consecutive case series.

Participants: Thirty-four eyes of 25 patients (age range, 20-59 years) with post-LASIK ectasia were included.

Refractive and corneal aberrometric changes after intracorneal ring implantation in corneas with pellucid marginal degeneration.

Purpose: To evaluate refractive, visual, and aberrometric changes in corneas with pellucid marginal degeneration (PMD) implanted with intracorneal ring segments (ICRS) during a 6-month follow-up.

Design: Retrospective, consecutive case series.

Participants: We included 21 consecutive eyes of 15 patients ranging in age from 21 to 73 years old and with a diagnosis of PMD.