Aim: To find out the refractive status in cases of ROP (stage 2) at one year of age. Materials and methods: 88 eyes of ROP (stage 2) were included in this study, however, 80 eyes participated; these patients were initially examined during their neonatal period and were assessed for refractive ...

In 2009, we established a pilot telehealth service to a sleep laboratory in Garden City, Kansas, approximately 600 km from the Kansas University Medical Center. Videoconferencing was used for polysomnography (PSG) study follow-up, patient monitoring and sleep laboratory medical management. It allowed the sleep specialist to treat patients and collaborate ...

Purpose:  To test the feasibility of calculating neural contrast sensitivity function (neural CSF) from conventionally measured total contrast sensitivity function (total CSF) and measured modulation transfer function (MTF). Neural CSF considers the retina and the brain, whereas total CSF considers the optical eye media, the retina and the brain together. ...

Aim:  To evaluate the higher order aberrations and resultant bilateral wavefront patterns in paediatric patients with idiopathic amblyopia. Material and Methods:  In this cross sectional observational trial, seventeen consecutive patients of previously diagnosed idiopathic amblyopia underwent wavefront analysis on Zyoptix platform (Bausch and Lomb, Rochester, NY, USA). Results:  The mean ...

Purpose. To compare total ocular aberrations and corneal aberrations identified with four different aberrometers and to determine the repeatability and interobserver variability. Methods. In this prospective comparative study, 23 healthy subjects underwent bilateral examination with four aberrometers: the Irx3 (Hartmann-Shack; Imagine Eyes, Orsay, France), Keratron (Hartmann-Shack; Optikon, Rome Italy), iTrace ...

Purpose. To describe the detailed surgical technique used for harvesting and transplantation of autologous nasal mucosa grafts for ocular surface reconstruction, to evaluate the clinical results and utility of autologous nasal mucosa grafts in ocular surface diseases. Methods. Autologous nasal mucosa was harvested from either the middle or inferior turbinate. ...

To assess if sleep patterns and sleepiness are compromised in children with nocturnal enuresis (NE), in comparison with normal control subjects, and to evaluate the role of enuresis-related events during sleep. Assessment of natural sleep patterns at home in a sample of children referred to enuresis clinics and controls. Children's ...

: Eye burns can cause significant ocular morbidity and miss early detection if unsuspected. The objective was to ascertain the reported causes of burns to the eyes in children. : Published literature on eye burns in children was searched from 1950 to July 2008 in MEDLINE and from 1982 to ...

To investigate the effect of different sizes of pterygium on ocular aberrations along with corneal refractive changes, keratometry, and corneal topography. Forty eyes of 34 patients who had different sizes of primary nasal pterygium and 40 eyes of 22 age- and sex-matched healthy subjects without a clinical diagnosis of pterygium ...

The aim of the present study was to evaluate changes in spherical aberration and their effect on visual quality (visual acuity and contrast sensitivity) in both distance and near with different non-custom-made contact lenses. A wavefront analyser was used to measure the aberrations in each subject's eyes uncorrected and with ...

The role of inherent spherical aberration (SA) in the optical performance of presbyopic eyes corrected with simultaneous vision multifocal contact lenses was investigated. Presbyopic schematic eyes were modeled with partial accommodative function to represent 45- and 55-year olds and were further classified into five categories based on their magnitude of ...

With the advancement of microsurgical techniques, lamellar keratoplasty (LK) has been more valued and performed to treat corneal blindness. This study aimed to evaluate the indications and changing trends for LK during the past 16 years in Shandong Eye Institute, an eye center in China. A total of 1529 eyes, ...

To compare high-order aberration between the eyes with pterygium and normal fellow eyes. Ophthalmic Research Center and Department of Ophthalmology Labbafinejad Medical Center Shahid Beheshti University of Medical Sciences Tehran, Iran. This comparative cross-sectional study comprised 31 patients with unilateral pterygium. NIDEK OPD-Scan wavefront aberrometry was performed in all patients ...

Spherical aberration affects vision in varying degrees depending on pupil size, accommodation, individual eye characteristics, and interpretations by the brain. We developed a spherical aberration gauge to help evaluate the correction potential of spherical aberration in human vision. Variable aberration levels are achieved with laterally shifted polynomial plates from which ...

To determine the spherical wave aberration of the human eye based on corneal topography. Based on the pre- and postoperative status of 146 consecutive eyes (median patient age 36 years), the correlations between spherical aberration and asphericity and between corneal and ocular spherical aberrations were determined using simple linear regression ...

Analysis of induced wavefront aberration after refractive surgery is important in the design of vision correction and the development of visual correction technology. Based on a mathematical model of the anterior corneal surface, the influence of treatment decentration on induced wavefront aberrations was studied by considering oblique incidence. The results ...

BACKGROUND: Refractive error is an important cause of preventable visual impairment and blindness worldwide. Population-based studies will continue to be a key part in identification ofthe magnitude and the importance of this common eye disease. OBJECTIVE: To assess the prevalence of the refractive error in primary school-aged children in Bangkok ...

The Vision Screener® (Plusoptix) was developed for the recognition of amblyogenic refractive errors without cycloplegia. The aim of this study was to evaluate the sensitivity and specitifity for the detection of amblygenic refractive errors in preschool children. Furthermore it was investigated whether small angle strabismus as another cause for amblyopia ...

To compare wavefront-guided and wavefront-optimized LASIK in patients with myopic astigmatism up to -7.00 diopters (D) sphere and 3.00 D cylinder. In this prospective, comparative study, 41 patients had wavefront-guided LASIK in one eye and wavefront-optimized LASIK in the fellow eye. The LASIK flap was created with a Hansatome XP ...

Wave aberrations of isolated ex vivo porcine crystalline lenses were measured by using a point-diffraction interferometer. This method allowed us to gain greater insight into the detailed aberration structure of eye lenses showing systematic presence of some dominant aberrations. In order of significance, astigmatism together with spherical aberration, coma, and ...

The common marmoset, Callithrix jacchus, is a primate model for emmetropization studies. The refractive development of the marmoset eye depends on visual experience, so knowledge of the optical quality of the eye is valuable. We report on the wavefront aberrations of the marmoset eye, measured with a clinical Hartmann-Shack aberrometer ...

Advances in the optical design of soft contact lenses have seen certain manufacturers incorporate aspheric optics into soft lenses in an attempt to reduce spherical aberration, to provide superior visual performance. The aim of this study is to determine the on-eye differences in spherical aberration and higher order aberrations (HOA) ...

PURPOSE:: To compare high-order aberration between the eyes with pterygium and normal fellow eyes. SETTING:: Ophthalmic Research Center and Department of Ophthalmology Labbafinejad Medical Center Shahid Beheshti University of Medical Sciences Tehran, Iran. METHOD:: This comparative cross-sectional study comprised 31 patients with unilateral pterygium. NIDEK OPD-Scan wavefront aberrometry was performed ...

OBJECTIVE: To examine the long-term changes of the axial length in adults with high myopia. DESIGN: Open-label, consecutive, retrospective case series. METHODS: The medical records of 101 patients (184 eyes) with high myopia (myopia ≥-6 diopters or axial length ≥26.5 mm) were studied. The axial length of the eye was ...

PURPOSE: This study compares the differences in the magnitude of the subjective refraction and three aberrometry-derived refractions along with visual acuity achieved with these refractions in a group of keratoconic patients and age-matched normal subjects. MATERIALS AND METHODS: Subjective refraction and Hartmann-Shack aberrometry was performed on six keratoconus patients and ...

PURPOSE: To evaluate the effect of non-penetrating corneal foreign bodies secondary to explosive blasts on the visual performance of soldiers. METHODS: In a prospective, non-interventional study subjective visual performance and objective optical quality of 11 injured eyes with retained corneal foreign bodies were compared with that of 11 normal controls. ...

In virgin eyes, the internal aberrations compensate corneal aberrations, and it has been suggested that the compensation may be feedback-driven and developmental, with active or passive adaptive mechanisms potentially responsible for the aberration auto-compensation. The purpose of this study is to investigate the internal higher order aberrations (HOA) following laser ...

To describe the association between refractive errors, ocular biometry, and age-related macular degeneration (AMD) in an Asian Malay population in Singapore. A population-based study of 3280 Malay individuals aged 40 to 80 years was conducted in Singapore. Early- and late-AMD signs were graded from retinal photographs according to the Wisconsin ...

We studied the normal ocular development of the chick (Gallus gallus domesticus, White Leghorn) up to 15 days of age using both longitudinal and cross-sectional methods. The change in refractive error, corneal curvature and axial ocular distances were used to construct schematic eyes. Equations are presented which allow prediction of refractive ...

PURPOSE: To examine the heritability of spherical equivalent (SE) in older women. DESIGN: Population-based twin study. PARTICIPANTS: Ninety monozygotic (MZ) and 86 dizygotic (DZ) female twin pairs aged 63 to 76 years who were born from 1924 through 1937. METHODS: Ocular refraction was measured using an autorefractor and controlled by ...

To assess the 1-year clinical outcomes of toric Visian Implantable Collamer Lens (ICL; STAAR Surgical, Nidau, Switzerland) implantation for moderate to high myopic astigmatism. Prospective, observational case series. Fifty-six eyes of 32 consecutive patients, with spherical equivalent errors of -4.00 to -17.25 diopters (D) and cylindrical errors of -0.75 to ...

OBJECTIVES: The aim of this case report is to investigate the effect of rigid gas permeable (RGP) lens fitting on visual acuity and ocular higher-order aberrations by systematically applying RGP lenses with different back optic zone radii (BOZR) to a keratoconic eye. METHODS: Eight Menicon-EX RGP lenses (Menicon Co., Nagoya, ...

PURPOSE: To study the change in ocular aberrations after wavefront optimized (WFO) laser in situ keratomileusis (Lasik) for correction of myopia and to analyze causative factors that may influence them. MATERIALS AND METHODS: This was a prospective case series. WFO Lasik was performed for the correction of myopia, using the ...

To evaluate the influence of the pupil size on clinical results and objective parameters of optical quality of the Tecnis 1-piece (ZCB00) intraocular lens. Centre of Ophthalmology, Eberhard-Karls University Tübingen, Germany. In this study 51 eyes were implanted with a Tecnis 1-piece IOL. Best corrected visual acuity (BCVA) and uncorrected ...

Background/aims:  To assess corneal refraction and axial length in children with mucopolysaccharidosis I-Hurler (MPS I-H), treated early with stem cell transplantation (SCT), in order to establish possible causes of hyperopia. Methods:  Clinical ophthalmological follow-up included keratometry and measurements of axial length. Results:  Five patients, with SCT performed before 23 months of ...

PURPOSE: To investigate the distribution of corneal spherical aberration in Japanese eyes with cataract for implantation of aspheric intraocular lenses (IOLs). METHODS: Corneal spherical aberration (Zernike coefficient Z04) in the central 6-mm zone was measured with a wavefront analyzer (KR9000PW, Topcon) in 257 eyes of 168 Japanese patients with cataract. ...

OBJECTIVE: To compare the visual performance of aspherical AcrySof IQ (SN60WF) and SA60AT spherical intraocular lenses after cataract surgery. DESIGN: Prospective comparative study. PARTICIPANTS: Seventy eyes of 35 patients who underwent phacoemulsification for cataract surgery. METHODS: The IQ lens was implanted in one eye and the SA60AT lens in the ...

PURPOSE: To compare refractive outcomes, higher order aberrations, visual quality, and patient satisfaction between aspheric and whole-eye wavefront aspheric LASIK algorithms. METHODS: Two hundred seventy-four eyes of 152 patients undergoing LASIK for myopia and myopic astigmatism were divided into two groups: eyes that underwent treatment using either the OPD-guided customized ...

Amblyopia is a common ophthalmological condition and the wavefront aberrometer is a relatively new diagnostic tool used globally to measure optical characteristics of human eyes as well as to study refractive errors in amblyopic eyes. We studied the wavefront aberration of the amblyopic children's eyes and analyzed the mechanism of ...

Shack-Hartmann wavefront sensors have found widespread application for testing ocular aberrations. These sensors provide an accurate map of the wavefront emerging from an eye in most cases. However, there is a growing class of patients with diffractive intraocular lenses that will potentially be measured incorrectly with Shack-Hartmann devices. We explore ...

PURPOSE: To describe the treatment of highly aberrated eyes due to previous excimer laser surgery or trauma. METHODS: Three eyes (three patients) with reduced visual quality due to previous decentration or corneal laceration (one eye) underwent topography-guided ablation using the CXIII excimer laser (NIDEK Co Ltd) to correct residual refractive ...

OBJECTIVE: To evaluate the effect of rigid gas permeable (RGP) contact lenses in reducing wave-front aberrations in post-laser in situ keratomileusis (LASIK) myopic patients. DESIGN: Cross-sectional study. PARTICIPANTS: Thirty patients with visual complaints after conventional LASIK procedure for correcting myopia. METHODS: The 30 patients were fitted with RGP contact lenses. ...

Peripheral refraction is commonly used to infer retinal shape. Because of the different prevalence of myopia in the white compared with East Asian populations, peripheral refraction along the horizontal meridian was compared in white and East Asian young adults with emmetropic, low myopic, and moderately myopic refractive errors. Thirty-five white ...

PURPOSE: To evaluate the effect of changing the pupil size on the corneal first-surface higher-order aberrations induced by different refractive treatments: standard laser in situ keratomileusis (LASIK), custom LASIK, and corneal refractive therapy. DESIGN: Observational study. METHODS: Eighty-one right eyes from patients with a mean age of 29.94 +/- 7.5 ...

To investigate the relationship between higher order aberrations and low contrast visual acuity in myopic eyes under mesopic conditions. This prospective, observational case series included 52 patients (29 women, 23 men) aged 18 to 35 years. Ocular higher order aberration was measured under mesopic conditions using the Hartmann-Shack wavefront analyzer, ...

PURPOSE: To compare differences in visual outcomes and induced spherical aberration after conventional and wavefront-optimized LASIK for the treatment of hyperopia. METHODS: In a prospective, randomized, single-center clinical trial, 51 consecutive eyes underwent LASIK for the treatment of hyperopia. Eyes were divided between groups treated with conventional LASIK with the ...

PURPOSE: To assess the compensation of total ocular and corneal wavefront aberrations after conventional myopic LASIK. METHODS: This study comprised 57 eyes of 57 patients. Total and corneal aberrations were measured preoperatively and 3 months postoperatively using the OPD-Scan (NIDEK Co Ltd) aberrometer. Total and corneal aberrations root-mean-square (RMS) was ...

PURPOSE: To determine whether implantation of anaspheric intraocular lens (SN 60 WF Alcon) results in reduced spherical aberration and improved contrast sensitivity after cataract surgery. METHODS: Randomized, prospective study. 260 patients/eyes were randomized to receive two intraocular lens types: Alcon Acrysof Natural (136 eyes) and Acrysof IQ (124 eyes). Quality ...

PURPOSE: To compare visual acuity and ocular higher-order aberrations (HOAs) in eyes with waterclefts, a type of crystalline lens opacity, and in normal eyes. SETTING: Department of Ophthalmology, Kanazawa Medical University, Ishikawa, Japan, and Faculty of Medicine, University of Iceland, Reykjavik, Iceland. METHODS: In this nested case-control study of subjects ...

Missing information, need for additional test can be cause for "returns." Another set of eyes' helps minimize errors in reports. Multidisciplinary team designed the PI interventions.