Publications by authors named "AbbasAli Yekta"
Purpose: To compare biometric and optical coherence tomography parameters as well as refractive status in preterm children aged 4-8 years with or without retinopathy of prematurity (ROP), and evaluate their correlations with age and gender-matched full-term children.
Methods: Retrospective comparative cohort study of four groups of children. Children with a history of preterm birth, including ROP who received intravitreal bevacizumab (IVB) treatment, children with a history of ROP that regressed without treatment and those with no history of ROP were compared to age and gender-matched full-term children as a control group.
Objective: To determine the agreement between measurements of accommodative amplitude (AoA) in children using a specialised accommodative rule and measurments without it.
Methods: A total of 502 children underwent optometric examinations, including the measurement of visual acuity, objective and subjective refraction. AoA measurements were done with and without the Berens accommodative rule.
Article Synopsis
- The study aimed to compare early changes in corneal biomechanical parameters after two different eye surgeries: photorefractive keratectomy (PRK) and small incision lenticule extraction (SMILE).
- Researchers evaluated 124 eyes before and two weeks after surgery, measuring various corneal parameters to see how they correlated with corneal shape changes.
- Results showed significant reductions in corneal stiffness and changes in certain biomechanical metrics for both groups, with SMILE demonstrating greater elastic changes, but similar reductions in other viscoelastic measures compared to PRK.
Purpose: The present study sets out to investigate the effect of cyclopentolate-induced cycloplegia on distance and near deviation and the accommodative convergence/accommodation (AC/A) ratio.
Methods: This prospective study was performed on 30 subjects. The inclusion criteria included a lack of any active ocular pathology and systemic diseases, no history of ocular surgery, and nonuse of various medications.
Does Long-Term Night Shift Work Cause Dry Eye in Hospital Nurses?
J Ophthalmic Vis Res
November 2023
Purpose: To determine the long-term effects of night shift work on dry eye in hospital nurses.
Methods: Each participant was evaluated four times, including at the beginning of the day shift (8 am), at the end of the day shift (2 pm), at the beginning of the night shift (8 pm), and at the end of the night shift (8 am), using the tear break-up time (TBUT) test and ocular surface disease index (OSDI) questionnaire.
Results: The results showed significant differences in the TBUT and OSDI between the end of the day shift (2 pm) (10.
Purpose: To determine the prevalence of hypertension in a population above 60 years of age and its relationship with demographic and anthropometric factors.
Methods: A cross-sectional population-based study was conducted in 2019. Using a multistage random cluster sampling, 160 clusters were selected from 22 districts of Tehran.
Clinical Relevance: Evaluating factors affecting corneal higher-order aberration component has a very important role in interpreting the characteristics of the formed image on the retina.
Background: To determine the relationship between ocular biometric components and corneal higher-order aberrations in an elderly population.
Methods: This report is related to a subsample of the Tehran Geriatric Eye study (TGES), a population-based cross-sectional study that was conducted on individuals aged 60 years and above in Tehran city, Iran using multistage stratified random cluster sampling.
Purpose: To determine the prevalence of different types of ocular trauma and their relationship with some factors in the elderly population.
Methods: The present population-based cross-sectional study was conducted on the elderly population aged 60 years and above in Tehran, Iran, using multi-stage stratified random cluster sampling in 2019. After selecting the samples and their participation in the study, demographic information and history of ocular trauma were obtained through an interview.
To compare the anterior segment indices between mentally retarded and normal children. The current study was conducted as a cohort. In this study, 73 mentally retarded and 76 normal children were selected from normal school and special schools for mentally retarded children using random cluster sampling method.
View Article and Find Full Text PDFAim: To collect and present updated evidence about epidemiological aspects of retinoblastoma (Rb) in the world.
Methods: A comprehensive search without the time and language restrictions was conducted in international databases, including MEDLINE, Scopus, Web of Science, and PubMed. The search keywords were "retinoblastoma" OR "retinal Neuroblastoma" OR "retinal glioma" OR "retinoblastoma eye cancer" OR "retinal glioblastoma".
Purpose: This study used contrast sensitivity (CS) and optical coherence tomography (OCT) to assess the functional and structural alterations of the macula and the optic nerve head (ONH) in diabetic patients with no retinopathy and those with mild nonproliferative diabetic retinopathy (NPDR).
Materials And Methods: In this study, 40 eyes of 20 diabetic patients with no diabetic retinopathy (DR), 40 eyes of 20 diabetic patients with mild NPDR, and 36 eyes of 18 healthy individuals were examined. Best-corrected visual acuity (VA) and CS were performed using early treatment DR study charts and the Pelli-Robson chart, respectively.
Purpose: Assessment of the pattern visual evoked potential (PVEP) responses in different areas of visual fields in individuals with normal vision.
Methods: This study was conducted on 80 eyes of normal subjects aged 18-35 years. All participants underwent refraction and visual acuity examination.
Aim: To determine the distribution and associated factors of intraocular pressure (IOP) in an Iranian elderly population 60 years of age and above.
Methods: The present report is part of the Tehran Geriatric Eye study (TGES), a population-based cross-sectional study that was conducted on the residents of Tehran 60 years of age and above. The sampling was performed using multistage stratified random cluster sampling methods from 22 districts of Tehran, Iran.
Purpose: The aim of this study was to determine the distribution of corneal volume (CV) using Pentacam and its relationship with demographic and ocular factors in an elderly population older than 60 years.
Methods: The present report is a part of the Tehran Geriatric Eye Study. The sampling was performed using the multistage stratified random cluster sampling method.
Purpose: To determine the distribution of corneal biomechanical parameters in an elderly population.
Methods: This cross-sectional study was conducted in subjects above 60 years living in Tehran. The participants were selected using multi-stage cluster sampling.
Purpose: To determine the relationship between road accidents with visual acuity, refractive errors, visual field, and contrast sensitivity.
Methods: This population-based case-control study was conducted on roads leading to Tehran Province, Iran. The case group comprised drivers who had met with accidents and were at fault for the accident.
Purpose: To determine the age and sex-standardized prevalence of corneal arcus and its associated factors in a geriatric population.
Methods: This population-based cross-sectional study was conducted in 2019 in Tehran; the capital of Iran, using a multi-stage stratified random cluster sampling method. All participants underwent a detailed interview, blood pressure measurement, laboratory blood tests, and a complete ocular examination.
Purpose: To determine the prevalence of astigmatism and its associated factors and examine astigmatism symmetry patterns in an elderly population.
Study Design: Population based cross-sectional study.
Methods: The present population-based cross-sectional study was conducted on an elderly population above 60 years of age in Tehran, Iran in 2019.
Purpose: The aim of this study was evaluate the effect of governmental support in the form of Health Transformation Plan (HTP) on increasing the cataract surgical rate.
Methods: The number of cataract surgeries was collected from Iranian cataract surgery clinics during 2019. HTP was implemented in 2014.
Aim: To determine the prevalence of ocular trauma in Iranian children aged 6-12 years.
Methods: This population-based cross-sectional study, comprised the first phase of the Shahroud Schoolchildren Eye Cohort Study on primary school children using cluster sampling in urban areas and census in rural areas. The students underwent the measurement of uncorrected and corrected visual acuity as well as non-cycloplegic, cycloplegic, and subjective refraction.
Background: We aimed to determine the age and sex standardized prevalence of corneal opacity and its determinants.
Methods: The Tehran Geriatric Eye Study (TGES) is a population-based cross-sectional study conducted on 3791 subjects aged above 60 yr in Tehran, Iran (2019) selected using stratified random cluster sampling. After sampling, all subjects underwent complete ophthalmic, optometric, and eye examinations.
Purpose: To evaluate varied aspects of binocular function in multiple gaze positions.
Methods: In 2018, this cross-sectional study was conducted on 21 participants (male = 11) with an age range of 19-25 years. Having emmetropia and 10/10 visual acuity in both eyes were conditions of the inclusion criteria for the cross-sectional study.
Purpose: To determine the distribution of blood glucose and prevalence of diabetes in people above 60 years living in Tehran and their relationship with some variables.
Methods: In this cross-sectional population-based study, multistage cluster sampling was performed in the over 60-year-old population of Tehran. Blood samples were collected from all participants and the data of the history of diabetes and the use of blood glucose lowering agents or other drugs were collected using interviews.