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hesam hashemian

Fereshteh Aslani, Masoud Khorrami-Nejad, Mohammad Aghazadeh Amiri, Hesam Hashemian, Farshad Askarizadeh, Bahram Khosravi
Purpose: To evaluate the magnitudes and axis orientation of anterior corneal astigmatism (ACA) and posterior corneal astigmatism (PCA), the ratio of ACA to PCA, and the correlation between ACA and PCA in the different stages of keratoconus (KCN). Methods: This retrospective case series comprised 161 eyes of 161 patients with KCN (104 men, 57 women; mean age, 22.35 ± 6.10 years). The participants were divided into four subgroups according to the Amsler-Krumeich classification...
January 2018: Journal of Ophthalmic & Vision Research
Hesam Hashemian, Mirgholamreza Mahbod, Fahimeh A Amoli, Mohammad Y Kiarudi, Mahmoud Jabbarvand, Ahmad Kheirkhah
PURPOSE: To evaluate the histopathologic changes in the conjunctiva of patients with conjunctivochalasis (CCh) compared to age-matched controls. METHODS: This cross-sectional, controlled study included 27 eyes of 27 patients with CCh and 16 eyes of 16 age-matched controls. A biopsy of the bulbar conjunctiva was performed along the temporal lower lid margin before cataract surgery in both groups. Histopathologic evaluation of the specimens was done with light microscopy using staining with hematoxylin/eosin, periodic acid Schiff, and van Gieson elastic stain...
October 2016: Journal of Ophthalmic & Vision Research
Hesam Hashemian, Reza Mirshahi, Mehdi Khodaparast, Mahmoud Jabbarvand
PURPOSE: To investigate recent evidence in prophylaxis and management of post-cataract surgery endophthalmitis. METHODS: We conducted a literature search using Pubmed database for post cataract surgery endophthalmitis, and relevant articles were selected from original English papers published since 2015. RESULTS: Forty-nine articles were published regarding post-cataract surgery endophthalmitis from January 2015 to February 2016. A low incidence of post-cataract surgery endophthalmitis has been reported...
September 2016: Journal of Current Ophthalmology
Mahmoud Jabbarvand, Hesam Hashemian, Mehdi Khodaparast, Pasha Anvari
PURPOSE: To evaluate the effects of photorefractive keratectomy (PRK) on the stereopsis of myopic and hyperopic patients. SETTING: Farabi Eye Hospital, Tehran, Iran. DESIGN: Prospective case series. METHODS: This study included patients having PRK to achieve emmetropia. The patients were divided into the following 3 groups: low myopia (<-6.0 diopters [D]), high myopia (>-6.0 D), and hyperopia (<+4.0 D). Near stereoacuity was measured using the Randot test under photopic conditions (with corrective glasses) at 40 cm preoperatively (with corrective glasses) and 1, 3, and 12 months postoperatively...
June 2016: Journal of Cataract and Refractive Surgery
Sasan Moghimi, Hesam Hashemian, Rebecca Chen, Mohammadkarim Johari, Massood Mohammadi, Shan C Lin
PURPOSE: To compare long term efficacy of phacoemulsification in the early management of acute primary angle closure (APAC) after aborting an acute attack and performing laser peripheral iridotomy (LPI). METHODS: In this nonrandomized comparative prospective study, we included 35 subjects presenting with APAC who had responded to medical treatment and LPI with intraocular pressure (IOP) less than 25 mmHg. Twenty patients with visually significant cataract with visual acuity of <20/30 were assigned to the "Phaco/LPI" group and underwent phacoemulsification within 6 weeks of the attack...
September 2015: Journal of Current Ophthalmology
Amir H Beheshtnejad, Hesam Hashemian, Abbas M Kermanshahani, Alireza Mahmoudi, Mohammad K Johari
PURPOSE: To assess tear film stability, ocular surface disease index (OSDI) score, Schirmer test value, tear film breakup time (TBUT), and tear osmolarity after photorefractive keratectomy (PRK). METHODS: We enrolled 50 eyes from 25 patients who were PRK candidates (15 men, 10 women). The mean age was 31.9 ± 4.5 years. Dry eye severity was evaluated using OSDI questionnaire, TBUT, Schirmer test, and tear osmolarity preoperatively and in each postoperative follow-up visit during the 4-month follow-up period...
December 2015: Cornea
Fatemeh Alipour, Mahmoud Jabbarvand, Hesam Hashemian, Simindokht Hosseini, Mehdi Khodaparast
OBJECTIVES: The objective was to compare conventional circular yttrium aluminum garnet (YAG) laser capsulotomy with hinged capsulotomy to manage posterior capsular opacification (PCO). MATERIALS AND METHODS: This prospective, randomized clinical trial enrolled pseudophakic patients with visually significant posterior capsule opacification. Patients were randomized to undergo posterior YAG laser capsulotomy with either conventional circular technique or a new technique with an inferior hinge...
July 2015: Middle East African Journal of Ophthalmology
Mahmoud Jabbarvand, Hesam Hashemian, Mehdi Khodaparast, Amin Rafatnejad, Amirhooshang Beheshtnejad, Amir Salami
PURPOSE: To evaluate and compare the ocular surface condition in herpetic interstitial stromal keratitis and neurotrophic ulcer groups and their normal fellow eyes. METHODS: In this observational, cross-sectional case-control study, 85 consecutive patients were included, including 56 cases of treated herpetic interstitial keratitis and 29 patients with neurotrophic ulcers. Fifty-six age- and sex-matched participants were also recruited from a normal population as the control group...
July 2015: Cornea
Sasan Moghimi, Hamidreza Torabi, Hesam Hashemian, Heydar Amini, Shan Lin
PURPOSE: To quantitatively analyze central corneal thickness (CCT) in patients with primary angle closure glaucoma (PACG) and primary open-angle glaucoma (POAG), and to evaluate its correlation with severity of glaucoma. METHODS: In this retrospective study, records of patients with previously diagnosed POAG or PACG at a tertiary glaucoma service were reviewed. CCT was measured by ultrasound pachymetry. Mean deviation (MD) on visual field (VF) testing was recorded for glaucoma severity determination...
October 2014: Journal of Ophthalmic & Vision Research
Mahmoud Jabbarvand, Hesam Hashemian, Mehdi Khodaparast, Narges Hassanpour, Masoumeh Mohebbi
UNLABELLED: We describe a new method (intrastromal lamellar keratoplasty) to treat patients with pellucid marginal degeneration (PMD). After a pocket is created along the marked margins of the thinned inferior cornea with Melles dissectors, a crescent of the same size is marked on the donor cornea. The epithelial and endothelial layers are removed, and the donor tissue is cut in a crescentic shape in the size of the marked corneal pocket. The donor crescentic stroma is then inserted into the stromal pocket...
January 2015: Journal of Cataract and Refractive Surgery
Hesam Hashemian, Mahmoud Jabbarvand, Mehdi Khodaparast, Kambiz Ameli
PURPOSE: To evaluate the outcome of accelerated and conventional corneal cross-linking (CXL) procedures regarding their effect on morphological and optical properties of the cornea. METHODS: One hundred fifty-three eyes of 153 patients were evaluated before and during a 15-month follow-up period after CXL (76 eyes in the conventional group and 77 eyes in the accelerated group). Measured variables include corrected distance visual acuity (CDVA), uncorrected distance visual acuity (UDVA), refraction, maximum keratometry, endothelial cell density, anterior and posterior stromal keratocyte density, and subbasal nerve density...
December 2014: Journal of Refractive Surgery
Ahmad Salamatrad, Mahmoud Jabbarvand, Hesam Hashemian, Mehdi Khodaparast, Farshad Askarizadeh
PURPOSE: The aim of this study was to evaluate biocompatibility of a newly proposed intrastromal inlay in rabbit corneas. METHODS: Eighteen eyes of 9 New Zealand rabbits were included in this prospective study. An intrastromal pocket was created in both eyes using Melles instruments. Annular intracorneal inlays made of hexafocon A were implanted randomly into the stromal pocket of one eye of each rabbit. Confocal microscopy was performed at each visit during 6-month follow-up...
January 2015: Cornea
Mahmoud Jabbarvand, Hesam Hashemian, Mehdi Khodaparast, Hadi Ghadimi, Elias Khalilipour
PURPOSE: To evaluate the visual and refractive outcomes, endothelial cell count (ECC), ocular surface changes, corneal aberrations, and biomechanical profile changes after femtosecond laser-assisted anterior lamellar keratoplasty surgery for superficial corneal scars. SETTING: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. DESIGN: Prospective case series. METHODS: Patients with superficial corneal scars had femtosecond laser-assisted anterior lamellar keratoplasty...
November 2014: Journal of Cataract and Refractive Surgery
Mahmoud Jabbarvand, Mohammadnaser Hashemian, Hesam Hashemian, Fatemeh Bazvand, Mehdi Khodaparast
PURPOSE: To evaluate the effect of MyoRing implantations (DIOPTEX GmbH, Linz, Austria) in patients with ectasia after LASIK. METHODS: MyoRing implantation was performed in 15 eyes of 14 patients with ectasia after LASIK using a femtosecond laser. Uncorrected and corrected distance visual acuity, refraction, keratometry, central corneal thickness, corneal biomechanical profile, and corneal aberrometry were evaluated preoperatively and at 1, 3, and 6 months, and 1 year postoperatively...
July 2014: Journal of Refractive Surgery
Mahmoud Jabbarvand, Hassan Hashemi, Mehrdad Mohammadpour, Hassan Khojasteh, Mehdi Khodaparast, Hesam Hashemian
PURPOSE: The aim of this study was to evaluate the clinical outcomes of intrastromal MyoRing (Dioptex, GmbH, Linz, Austria) implantation at 2 different depths of 250 and 300 μm. METHODS: This was a prospective interventional randomized controlled trial, a pilot study. Keratoconic patients with keratometry values between 48 and 52 diopters were randomly divided into 2 groups. A continuous intrastromal corneal ring of the same size was implanted at 2 different stromal depths of 250 μm (group 1) and 300 μm (group 2) using femtosecond laser technology for both groups...
February 2014: Cornea
Bahram Eshraghi, Hesam Hashemian, Masoud Aghsaei Fard, Mona Safizadeh
PURPOSE: To evaluate the success of lacrimal sac empyema incision and drainage followed by early external dacryocystorhinostomy. METHODS: Interventional consecutive case series conducted in Farabi Eye Hospital between August 2007 and November 2010. Patients with acute dacyocystitis and lacrimal sac empyema underwent incision and drainage, followed by early (less than 4 weeks) external DCR. Data collection included patient demographics, past medical history, procedure technique, culture results, and formation of a persistent cutaneous fistula...
October 2013: Orbit
Mahmoud Jabbarvand, Ahmad Salamatrad, Hesam Hashemian, Mehdi Mazloumi, Mehdi Khodaparast
PURPOSE: To assess the clinical outcomes after continuous intracorneal ring (ICR) implantation for the management of keratoconus using femtosecond laser technology. SETTING: Farabi Eye Hospital, Tehran University of Medical Sciences, Tehran, Iran. DESIGN: Prospective nonrandomized consecutive case series. METHODS: All patients presented with reduced visual acuity, contact lens intolerance, and a central corneal thickness of more than 360 μm...
July 2013: Journal of Cataract and Refractive Surgery
Mahmoud Jabbarvand Behrouz, Hesam Hashemian, Mehdi Khodaparast, Ahmad Salamat Rad, Mahla Shadravan
PURPOSE: To describe the outcome of complete intrastromal ring (MyoRing, DIOPTEX GmBH, Linz, Austria) implantation following intrastromal corneal ring segment (Intacs, Addition Technology, Inc., Sunnyvale, CA) implantation for severe keratoconus. METHODS: Case report. RESULTS: A MyoRing was implanted in a keratoconic patient who had undergone a previous Intacs implantation surgery 4 years previously without Intacs explantation and had residual refractive error...
May 2013: Journal of Refractive Surgery
Mahmoud Jabbarvand, Ahmad Salamatrad, Hesam Hashemian, Mehdi Khodaparast
PURPOSE: To evaluate the effect of mechanical implantation of a continuous intrastromal ring in keratoconus. DESIGN: Prospective, interventional, nonrandomized, case series. METHODS: The MyoRing (Dioptex GmbH) was implanted after creation of an intrastromal pocket for 95 eyes of 95 patients with moderate and advanced keratoconus. All patients had at least 12 months of follow-up. Preoperative and postoperative visual acuity, keratometry, aberrometry, and refraction were the main outcome measures of the study...
May 2013: American Journal of Ophthalmology
Farzaneh Motamed, Yasaman Aminpour, Hesam Hashemian, Alireza E Soltani, Mehri Najafi, Fatemeh Farahmand
OBJECTIVES: The aim of the study was to compare the quality of sedation with 3 different sedation regimens in upper gastrointestinal endoscopy (UGIE) in pediatric patients. METHODS: One hundred fifty consecutive children who underwent UGIE were randomly assigned to 1 of the 3 medication regimens. Patients in group A (n = 49) received placebo. Forty-five minutes after the placebo was given, repeated intravenous (IV) doses of 0.1 mg/kg midazolam were administered titrated to achieve a level of deep sedation...
March 2012: Journal of Pediatric Gastroenterology and Nutrition
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