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https://www.readbyqxmd.com/read/28702951/the-prevalence-of-refractive-errors-among-adult-rural-populations-in-iran
#1
Hassan Hashemi, Payam Nabovati, Abbasali Yekta, Fereshteh Shokrollahzadeh, Mehdi Khabazkhoob
PURPOSE: The aim was to determine the prevalence of myopia and hyperopia and related factors in underserved rural areas in Iran. METHODS: Under random cluster sampling, two rural regions were randomly selected in the north and southwest of the country, and 3,061 persons over 15 years of age were invited into the study. After selecting samples, all participants had refraction, measurement of uncorrected vision and visual acuity and ocular health examination by slitlamp biomicroscopy...
July 12, 2017: Clinical & Experimental Optometry: Journal of the Australian Optometrical Association
https://www.readbyqxmd.com/read/28626821/mesopic-visual-quality-after-accelerated-corneal-cross-linking-a-12-month-follow-up-study
#2
Hassan Hashemi, Soheila Asgari
PURPOSE: To determine the 1-year changes of mesopic higher order aberrations (HOAs) and contrast sensitivity (CS) after accelerated corneal cross linking (CXL) in progressive keratoconus. METHODS: In this prospective case series, 70 eyes of 62 keratoconic patients underwent accelerated CXL (18 mW/cm(2), 5 min). HOAs and CS were measured using the OPD Scan III and CSV-1000 CS test charts under mesopic conditions before and 6 and 12 months after CXL. RESULTS: At 1 year, logarithmic mesopic CS in spatial frequencies of 3, 6, 12, and 18 cycles per degree (CPD) had increased by 0...
June 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28626817/comparison-of-current-tonometry-techniques-in-measurement-of-intraocular-pressure
#3
Behrooz Kouchaki, Hassan Hashemi, Abbasali Yekta, Mehdi Khabazkhoob
PURPOSE: To compare four tonometry techniques: Goldmann applanation tonometer (GAT), Dynamic contour tonometer (DCT), Non-contact tonometer (NCT), and Ocular Response Analyzer (ORA) in the measurement of intraocular pressure (IOP) and the impact of some corneal biomechanical factors on their performance. METHODS: In this cross-sectional study, volunteers with normal ophthalmic examination and no history of eye surgery (except for uncomplicated cataract surgery) or trauma were selected...
June 2017: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/28501443/meibomian-gland-dysfunction-and-its-determinants-in-iranian-adults-a-population-based-study
#4
Hassan Hashemi, Hadith Rastad, Mohammad Hassan Emamian, Akbar Fotouhi
PURPOSE: To estimate the prevalence of Meibomian gland dysfunction (MGD) and determine the associated factors in the general population in Iran. METHODS: This cross-sectional study is based on the data from the second phase of the Shahroud Eye Cohort Study conducted in 2014. Of the 4737 participants of the second phase, data was available for 4700 people; their mean age was 55.9±6.2 years and 2768 (58.9%) were women. Diagnosis of MGD was made based on the classification of the International Workshop on MGD as judged by the examining ophthalmologist...
August 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/27956045/biomechanical-properties-of-early-keratoconus-suppressed-deformation-signal-wave
#5
Hassan Hashemi, Asghar Beiranvand, Abbasali Yekta, Amir Asharlous, Mehdi Khabazkhoob
PURPOSE: To examine the diagnostic validity of different corneal biomechanical parameters for the detection of early keratoconus METHODS: Sixty-one eyes with a diagnosis of early keratoconus and 61 topographically normal eyes were enrolled in the study. All participants underwent testing with the Ocular Response Analyzer (ORA), and 40 indices from each cornea were included in the analysis. RESULTS: The mean (standard deviation: SD) of keratometry and central corneal thickness in keratoconic corneas was 46...
April 2017: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/27921328/comprehensive-profile-of-bilateral-astigmatism-rule-similarity-and-symmetry-patterns-of-the-axes-in-the-fellow-eyes
#6
MULTICENTER STUDY
Amir Asharlous, Mehdi Khabazkhoob, Abbasali Yekta, Hassan Hashemi
PURPOSE: To study rule similarity (isorule or anisorule) and symmetry patterns of axes (direct and mirror) in bilateral astigmatism. METHODS: Six years of data were collected from four ophthalmology clinics in Tehran. After applying the exclusion criteria (having eye disease or history of ocular surgery), final analyses were performed on data of 160 608 cases whose mean age was 39.2 ± 15.4 years (10-80 years) and 53.7% female. All subjects had autorefraction, retinoscopy, and subjective refraction data...
January 2017: Ophthalmic & Physiological Optics: the Journal of the British College of Ophthalmic Opticians (Optometrists)
https://www.readbyqxmd.com/read/27749472/higher-order-aberrations-after-cyclopentolate-tropicamide-and-artificial-tear-drops-application-in-normal-eyes
#7
Negin Amirshekarizadeh, Hassan Hashemi, Ebrahim Jafarzadehpur, Ali Mirzajani, Abbasali Yekta, Mehdi Khabazkhoob
PURPOSE: To determine the effect of cyclopentolate, tropicamide, and artificial tear drops on higher-order aberrations (HOAs) in normal eyes with OPD-Scan III (Nidek Inc., Tokyo, Japan). METHODS: In this study, 189 eyes of individuals aged 20 to 35 years were selected as samples. Inclusion criteria were a corrected visual acuity of 20/20 or better, a minimum size of about 5 mm for the pupil in the dark, hyperopia and myopia less than 5 D, and astigmatism less than 2 D...
September 30, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27699605/femtosecond-laser-assisted-lasik-versus-prk-for-high-myopia-comparison-of-18-month-visual-acuity-and-quality
#8
Hassan Hashemi, Reza Ghaffari, Mohammad Miraftab, Soheila Asgari
PURPOSE: To compare 18-month outcomes between femtosecond laser-assisted LASIK (femto-LASIK) and photorefractive keratectomy with mitomycin-C (PRK-MMC) for myopia of more than 7.0 D in terms of visual acuity and quality. METHODS: In this comparative nonrandomized clinical trial, 60 eyes from 30 patients (30 eyes in each group) were enrolled. The two procedures were compared in terms of 18-month changes in uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent, ocular and corneal higher order aberrations (HOAs), and contrast sensitivity (CS)...
August 2017: International Ophthalmology
https://www.readbyqxmd.com/read/27579454/correlation-of-higher-order-aberrations-and-components-of-astigmatism-in-myopic-refractive-surgery-candidates
#9
Mehrdad Mohammadpour, Zahra Heidari, Hossein Mohammad-Rabei, Ebrahim Jafarzadehpur, Mahmoud Jabbarvand, Hassan Hashemi, Mehdi Khabazkhoob
PURPOSE: To evaluate the correlation between refractive, corneal, and residual astigmatism and higher order aberrations (HOA) in refractive surgery candidates. METHODS: Three hundred and seventy-five eyes of 188 patients aged 28.2 ± 6.24 years with a predominance of females (62.7%) were enrolled in this study. Refraction, topography (Orbscan IIz, Bausch & Lomb, Rochester, NY, USA), and aberrometry (Zywave, Bausch & Lomb, Rochester, NY, USA) were performed to determine refractive and corneal astigmatism and HOA for all participants...
September 2016: Journal of Current Ophthalmology
https://www.readbyqxmd.com/read/27415581/floppy-eyelid-syndrome-and-its-determinants-in-iranian-adults-a-population-based-study
#10
Hassan Hashemi, Hadith Rastad, Mohammad Hassan Emamian, Akbar Fotouhi
OBJECTIVES: To estimate the prevalence of floppy eyelid syndrome (FES) and to determine the associated factors in a representative sample of Iranian adult population aged 45 to 69 years. METHODS: The data were according to the second phase of Shahroud Eye Cohort Study performed in 2014 with 4,737 participants aged 45 to 69 years. Diagnosis of FES was made based on the clinical judgment of the ophthalmologist during ocular examinations. The percentage and confidence intervals (CIs) of the prevalence of FES were reported, and the associated factors were analyzed using simple and multiple logistic regression models...
July 13, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27413490/corneal-biomechanical-changes-following-toric-soft-contact-lens-wear
#11
Somayeh Radaie-Moghadam, Hassan Hashemi, Ebrahim Jafarzadehpur, Abbas Ali Yekta, Mehdi Khabazkhoob
PURPOSE: To determine the effect of using toric soft contact lenses on corneal biomechanical properties. METHODS: We enrolled 33 healthy patients with mean age of 23.18 ± 4.06 and minimal cylinder power of 1 D (-1.98 ± 0.808 SD) and negative history of contact lens use; keratoconic patients were excluded from the study. Toric soft contact lenses (BIOFINITY, Comfilcon A, Coopervision, Southampton, UK) were fitted in all participants. The Ocular Response Analyzer (Reichert Ophthalmic Instruments, Depew, New York, USA) was used to measure corneal hysteresis (CH), corneal resistance factor (CRF), and the Pentacam HR (Oculus, Inc...
April 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27243355/evaluation-of-corneal-biomechanics-after-excimer-laser-corneal-refractive-surgery-in-high-myopic-patients-using-dynamic-scheimpflug-technology
#12
Hassan Hashemi, Soheila Asgari, Mahdi Mortazavi, Reza Ghaffari
OBJECTIVE: To compare the effect of femtosecond-assisted thin flap laser-assisted in situ keratomileusis (FS-LASIK) and photorefractive keratectomy with mitomycin-C (PRK-MMC) in highly myopic patients (>7.0 D [D]) on corneal biomechanical parameters. METHODS: In this prospective comparative interventional case series, 60 patients (30 patients in each group) with a manifest refractive spherical equivalent (MRSE) greater than 7.0 D were enrolled. Corvis ST parameters were measured before and at 3 and 6 months postoperatively...
May 26, 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/27195094/recurrent-corneal-perforation-due-to-chronic-graft-versus-host-disease-a-clinicopathologic-report
#13
Mehrdad Mohammadpour, Siamak Maleki, Hassan Hashemi, Amir Houshang Beheshtnejad
PURPOSE: To describe a case of chronic graft versus host disease (GVHD) leading to severe dry eye and recurrent corneal perforation in both eyes, its stepwise management and histopathological reports. CASE REPORT: A 22-year-old woman with a history of thalassemia and subsequent high-dose chemotherapy followed by allogeneic bone marrow transplant (BMT) was referred to Farabi Eye Hospital. Despite aggressive medical and surgical intervention, corneal vascularization in her right eye progressed and led to corneal perforation...
January 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27059537/five-year-change-in-refraction-and-its-ocular-components-in-the-40-to-64-year-old-population-of-the-shahroud-eye-cohort-study
#14
Hassan Hashemi, Mehdi Khabazkhoob, Rafael Iribarren, Mohammad Hassan Emamian, Akbar Fotouhi
BACKGROUND: To assess 5-year refractive changes and their related factors in the 40- to 64-year-old population of Shahroud, Iran. DESIGN: Prospective cohort study. PARTICIPANTS: Of the 5190 participants of Phase I, 4737 participated in Phase II (response rate = 91.3%). METHODS: Participants were tested by refraction, visual acuity, slit-lamp biomicroscopy, ophthalmoscopy and biometry. Myopia was defined as a spherical equivalent more negative than -0...
November 2016: Clinical & Experimental Ophthalmology
https://www.readbyqxmd.com/read/26854319/opd-scan-iii-a-repeatability-and-inter-device-agreement-study-of-a-multifunctional-device-in-emmetropia-ametropia-and-keratoconus
#15
COMPARATIVE STUDY
Soheila Asgari, Hassan Hashemi, Ebrahim Jafarzadehpur, Alireza Mohamadi, Farhad Rezvan, Akbar Fotouhi
The purpose of this study was to test the measurements of a multifunctional device, the NIDEK OPD-Scan III in terms of repeatability and agreement with retinoscopy and Pentacam in cases with emmetropia, ametropia, and KCN (grade 1-3). We enrolled 170 eyes (40 in each group of emmetropia and ametropia, and 90 in the 3 KCN subgroups). Acquisitions were done twice by a single technician to check the intra class correlation, repeatability index, and precision. To assess agreement, we compared OPD-Scan III with retinoscopy and Pentacam results by two blinded technicians...
October 2016: International Ophthalmology
https://www.readbyqxmd.com/read/26657666/femtosecond-assisted-lasik-versus-prk-comparison-of-6-month-visual-acuity-and-quality-outcome-for-high-myopia
#16
COMPARATIVE STUDY
Hassan Hashemi, Mohammad Miraftab, Reza Ghaffari, Soheila Asgari
OBJECTIVE: To compare the results of femtosecond-assisted laser in situ keratomileusis (femto-LASIK) and photorefractive keratectomy with mitomycin C (PRK-MMC) for the correction of myopia more than 7.0 diopters (D). METHODS: In this comparative nonrandomized trial, 60 eyes (30 eyes in each group) were enrolled. Patients were tested for uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), manifest refraction spherical equivalent, ocular and corneal aberrations, and contrast sensitivity (CS) before surgery and at 3 and 6 months postoperatively...
November 2016: Eye & Contact Lens
https://www.readbyqxmd.com/read/26322817/comparison-of-ocular-aberrations-in-two-hydrophobic-and-hydrophilic-intraocular-lenses
#17
COMPARATIVE STUDY
Ebrahim Jafarzadehpur, Hassan Hashemi, Tahereh Abdolahinia, Abbas A Yekta, Mehdi Khabazkhoob
OBJECTIVE: To compare differences in higher-order aberrations (HOAs) between two standard spherical monofocal intraocular lenses (IOLs), the hydrophobic acrylic Alcon SA60AT (Bausch & Lomb), and hydrophilic acrylic Rayner Superflex (620H) (Rayner). METHODS: In this case series, sixty-eight eyes of 68 patients who underwent phacoemulsification cataract surgery were studied. In group 1 (n=39), the hydrophobic Alcon SA60AT IOL, and in group 2 (n=29), the hydrophilic Rayner Superflex (620H) IOL, were implanted...
September 2015: Eye & Contact Lens
https://www.readbyqxmd.com/read/26187142/correlation-of-major-components-of-ocular-astigmatism-in-myopic-patients
#18
Mehrdad Mohammadpour, Zahra Heidari, Mehdi Khabazkhoob, Afsaneh Amouzegar, Hassan Hashemi
PURPOSE: To investigate the correlation of major components of ocular astigmatism in myopic patients in an academic hospital. METHODS: This cross-sectional study was conducted on 376 eyes of 188 patients who were referred to Farabi Eye Hospital for refractive surgery. Preoperative examinations including refraction and corneal topography were performed for all candidates to measure refractive and corneal astigmatism. Ocular residual astigmatism was calculated using vector analysis...
February 2016: Contact Lens & Anterior Eye: the Journal of the British Contact Lens Association
https://www.readbyqxmd.com/read/26180480/past-history-of-ocular-trauma-in-an-iranian-population-based-study-prevalence-and-its-associated-factors
#19
Hassan Hashemi, Mehdi Khabazkhoob, Mohammad Hassan Emamian, Mohammad Shariati, Saman Mohazzab-Torabi, Akbar Fotouhi
PURPOSE: The purpose of this study was to determine the prevalence of a history of ocular trauma and its association to age, sex, and biometric components. MATERIALS AND METHODS: Residents of Shahroud, Iran aged 40-64 years, were sampled through a cross-sectional study using multistage cluster sampling. Three hundred clusters were randomly selected, and 20 individuals were systematically selected from each cluster. The subjects underwent optometric and ophthalmic examinations, and ocular imaging...
July 2015: Middle East African Journal of Ophthalmology
https://www.readbyqxmd.com/read/26168210/disaster-in-cosmetic-surgery-inadvertent-formalin-injection-during-blepharoplasty
#20
Mohammad Taher Rajabi, Ali Makateb, Hassan Hashemi, Edward J Holland, Ali Djalilian, Jeffrey A Nerad
The authors report a case where formalin was accidentally injected into the eyelids of a 71-year-old woman undergoing blepharoplasty, causing full thickness necrosis of both upper eyelids and ocular complications that required multiple reconstructive surgical procedures.
July 2015: Ophthalmic Plastic and Reconstructive Surgery
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