Purpose: To determine the prevalence and associated factors for keratoconus in a college student population sample Jerusalem.Methods: Volunteers participated this cross-sectional study. Videokeratography was performed on both eyes of each subject who also completed an anonymous questionnaire. Keratoconus defined by cone apex ≥ 50D, inferior-superior dioptric difference 3.5 diopters, as well positive results from software indices KISA, KCI KSI. The association between independent predictors...

ABSTRACT Keratoconus is a noninflammatory disorder characterized by ectasia of the central or inferior portion cornea. This review presents scant epidemiological information known to date and factors believed cause development disease. They are genetic for which evidence come from family studies, twin studies loci. There appears be multiple genes causing keratoconus phenotype with variable penetration. However, predisposition might not enough; environmental factors, such as eye rubbing,...

To determine whether consanguinity is a risk factor for keratoconus (KC).A questionnaire was distributed to all patients presenting St. John Eye Hospital, Jerusalem, Israel. Questionnaire included data on demographic characteristics and potential factors. Patients were divided into two groups: cases with KC, in at least one eye, who diagnosed by the attending ophthalmologist basis of abnormal corneal topography common signs disease; controls problems other than KC free systemic ocular...

Purpose. This study was designed to compare higher order aberrations of the cornea and eye with inferior-superior (I-S) corneal topographic values in keratoconic eyes. Methods. We studied 92 eyes from 78 subjects: 21 14 subjects suspected keratoconus, 23 16 manifest 48 without keratoconus using L80 wave+, an instrument which can measure topography simultaneously a large dynamic range making it possible evaluate seventh Zernike polynomial function series. Results. All ocular were found be...

BackgroundThe purpose of this study was to describe the characteristics keratoconic patients seen in a specialised contact lens practice from general population with high prevalence disease.MethodsPatients attending for management keratoconus were asked complete questionnaire. Data collected on demographic characteristics, health, family history, eye rubbing, allergy, asthma, eczema, education level, history keratoplasty and smoking.ResultsTwo hundred forty‐four completed There male bias...

Abstract Purpose Keratoconus ( KC ) is a progressive corneal thinning disorder with an uncertain aetiology. Environmental and genetic factors, including consanguinity, eye rubbing possibly sun exposure, play role in the aetiology of . Here we test for risk factors Israeli population particular emphasis on exposure. Methods This case–control study included patients who were diagnosed at Care Laser Medical Group, refractive surgery clinic branches throughout Israel. The control group age, sex...

ABSTRACT Purpose To determine the prevalence of keratoconus (KC) in an Arab population Israel. Materials and methods Videokeratography was performed on volunteer students from Academic College Education, Haifa, All participants filled out a self-administered questionnaire to evaluate possible risk factors for KC. Univariate multivariate analysis were performed. Results Data 314 analyzed (N = 10), 3.18% (95% CI, 1.2 5.1%) found. The only significant factor (both univariate analysis) that...

Abstract Background Uncorrected refractive error is reported to be the most common cause globally of vision impairment in school age children. However, little known about extent uncorrected Israel. The purpose this study was investigate prevalence schoolchildren recruited for Israel Refraction, Environment, And Devices (iREAD) Study. Methods Healthy boys, ages 5–13 years, were participate iREAD Parents first answered a questionnaire exclude children with history amblyopia, strabismus, or...

This study analyzes the relationship between contrast-sensitivity and higher-order aberrations (HOA) in mild subclinical-keratoconus subjects with good visual-acuity (VA). Keratoconus group (including subclinical-keratoconus) controls underwent autokeratometry, corneal-tomography, autorefraction HOA measurement. Contrast-sensitivity was tested using a psychophysical two-alternative forced-choice Gabor patches three blocks (6, 9, 12 cycles/deg). Controls were compared to keratoconus subgroup...

Studies using questionnaires report that COVID-19 restrictions resulted in children spending significantly less time outdoors. This study used objective measures to assess the impact of pandemic-related on children’s behavior. A total 19 healthy 8–12-year-old boys were observed before and during social restriction periods. Of these, 11 reassessed after lifted. For each session, Actiwatches dispensed for outdoors, activity, sleep. Changes overall by school status assessed signed-rank test...

Background: A clinical evaluation of the L80 wave+ autorefractometer (Visionix Luneau, Chartres, France) was performed to evaluate its validity and repeatability compared with non‐cycloplegic subjective refraction. The is a new instrument based on Hartmann‐Shack principle that has specific autorefraction function using wavefront device can also measure keratometry, topography cornea higher‐order aberrations.Methods: Refractive error measurements were obtained from 100 eyes 50 subjects (age,...

Abstract Purpose Although there is a high prevalence of keratoconus in the Middle East including Israel, limited data available describing first‐degree relatives patients with sporadic (KC) using Scheimpflug imaging. The purpose this study to accurately phenotype KC Israel corneal tomography, which may help determine genetic aetiology KC. Methods First‐degree ( N = 56) 16 probands participated prospective case‐control study. Healthy controls 96) were from previous Autorefraction, visual...

The VX120 (Visionix Luneau, France) is a novel multi-diagnostic platform that combines Hartmann-Shack based autorefraction, Placido-disk corneal-topography and anterior segment measurements made with stationary-Scheimpflug camera. We investigate the agreement between different parameters measured by accepted or gold-standard techniques to test if they are interchangeable, as well evaluate repeatability reproducibility.The right-eyes of healthy subjects were included in study. Autorefraction...

Evidence supporting the contributions of near work in myopia is equivocal. Findings from this pilot study suggest that a high prevalence ultra-Orthodox boys may be attributed to intense at school and learning read preschool an early age.This aimed assess factors influence three groups Jewish with different educational demands.Healthy ultra-Orthodox, religious, secular (n = 36) aged 8 12 years participated. Refractive status, education, time spent reading writing, electronic device use were...

We previously found a dominant eye perceptional advantage in feature search (Vision Research, 2006). now ask if this extends to difficult conjunction search, which requires focused attention and depends on different cortical hierarchy levels. determined dominance by the Hole-in-the-Card test. Using red–green glasses, subjects viewed briefly presented, backward-masked, array of red/green dotted squares filled circles. On half trials square target replaced one square. There was significantly...

Abstract Purpose To determine the prevalence of choroidal naevi in a healthy population using an ultra‐wide scanning laser ophthalmoscope which can capture up to 200° field view retina, without pupil dilation. Methods Subjects were recruited from college population. Each subject underwent eye examination that included retinal and imaging O ptos completed self‐administered questionnaire. Univariate multivariate regression analysis performed identify associated factors with naevi. Results The...

This research investigated the reported optometric prescribing criteria of Israeli optometrists.An online questionnaire based on previous studies was distributed via email and social networking sites to optometrists in Israel. The surveyed level refractive error at which respondents would prescribe for different types various ages with without symptoms.124 responses were obtained, yielding a response rate approximately 12-22%, 92% whom had trained For all errors, presence symptoms strongly...

To determine the prevalence of refractive errors in Jewish and Arab college students Israel associations with ethnicity sex.In this retrospective cross-sectional study, first-year underwent non-cycloplegic autorefraction answered a questionnaire to assess age, sex, self-identified ethnicity. Spherical equivalent error (SER) was calculated, hyperopia (>+0.50 Diopter, D), emmetropia (>-0.50 +0.50 myopia (≤-0.50D, low ≤-0.50 >-3.0D, moderate <-3.0 >-6.0D, high ≤-6.0D), astigmatism (>0.50D) were...

A clinical evaluation of the L80 videokeratographer (Visionix Luneau, Chartres, France) was performed to assess its validity and repeatability compared with a traditional Bausch Lomb (B & L) keratometer. 87 right eyes subjects, (mean age 23.72 ± 3.62 years old, 70 women 17 men), participated in this study. Corneal curvature measured using instrument by one practitioner manual B L keratometer different practitioner. Intratest intertest were assessed. found be statistically between two...

Interpupillary distance (IPD) is important in developmental anatomy, genetics, design of optical instrumentation, ocular diagnostics, and prescribing. IPD frequently measured on different days, by either automatic pupillometers (physiological measurement) or manual ruler (anatomical measurement). Therefore, there importance the agreement inter-session repeatability measurements.Monocular from bridge nose binocular near were randomly measured, using a millimeter Essilor Pupillon pupillometer....

Uveal coloboma results from incomplete closure of the optic cup fissure. While conducting an evaluation a new ultra-wide field retinal imaging camera (Optomap), which provides view fundus up to 200° at one time without mydriasis, we discovered case bilateral chorioretinal in 21-year-old student. The lesion was located midperiphery each eye less than 2 disc diameters (DD) below inferonasal quadrants. size right 1.8 DD height and 1.3 width, while left 2.4 2.6 width. subject totally...