Read by QxMD icon Read

Siamak Zarei-Ghanavati

Amir Norouzpour, Siamak Zarei-Ghanavati
PURPOSE: To report hydrophilic acylic intraocular lens (IOL) opacification after Descemet Stripping Automated Endothelial Keratoplasty (DSAEK) in an eye with multiple prior intraocular surgeries and iatrogenic aniridia. CASE REPORT: A 34-year-old woman with history of penetrating keratoplasty (PKP) for advanced keratoconus and subsequent Urrets-Zavalia Syndrome (UZS) underwent phacoemulsification and hydrophilic acrylic IOL implantation for her cataract. In order to control post-PKP glaucoma, multiple glaucoma surgeries including two glaucoma drainage implants were performed...
April 2016: Journal of Ophthalmic & Vision Research
Siamak Zarei-Ghanavati, Hamid Gharaee, Alireza Eslampour, Asieh Ehsaei, Mojtaba Abrishami
PURPOSE: Stereopsis, as a part of visual function, is the ability of differentiating between the two eyes' views (binocular disparity), due to the eyes' different positions. The aim of this study was to compare stereoscopic vision before and after photorefractive keratectomy (PRK) in myopia. METHODS: In a prospective interventional case series study clinical trial, forty-eight myopic individuals (age range: 18-34 years) who had undergone PRK surgery by a Bausch & Lomb Technolas 217z excimer laser were included...
March 2016: Journal of Current Ophthalmology
Siamak Zarei-Ghanavati, Homa Bagherian
UNLABELLED: We describe a surgical technique for management of zonular instability and pupillary miosis using a pupil expansion device (Malyugin ring) in patients who need cataract surgery. In this technique, the pupil expansion device is first used in the usual fashion. After a capsulorhexis has been created, lateral scrolls of the pupil expansion device are released and repositioned to entrap both the anterior capsulorhexis and the pupil margin at the against-the-wound meridian (3 o'clock and 9 o'clock position) to fixate the unstable capsular bag to the iris...
September 2015: Journal of Cataract and Refractive Surgery
Siamak Zarei-Ghanavati, Hamid Gharaee, David Rex Hamilton, P James Sanchez, Mojtaba Abrishami
PURPOSE: To compare the refractive, visual, and aberrometric outcomes between wavefront-guided photorefractive keratectomy (PRK) and aspheric PRK in myopic patients. SETTING: Khatam-al-Anbia Eye Hospital, Mashhad, Iran. DESIGN: Prospective randomized clinical trial. METHODS: One eye of each patient was randomly assigned to excimer laser wavefront-guided PRK (Zyoptix) and the other eye to excimer laser aspheric PRK (Technolas 217z)...
July 2015: Journal of Cataract and Refractive Surgery
Siamak Zarei-Ghanavati, Fatemeh Irandoost
PURPOSE: To report a patient with refractory keratitis after a Boston type I keratoprosthesis treated with corneal collagen cross-linking (CXL). METHODS: Case report. RESULTS: A 29-year-old man with a history of chemical burn in the left eye underwent keratoprosthesis implantation. He developed infectious keratitis 4 months after surgery, which did not respond to topical antibiotics. The patient underwent corneal CXL with a shield covering the keratoprosthesis optic...
September 2015: Cornea
Siamak Zarei-Ghanavati, Carolina Betancurt, Alma Michelle Mas, Jianhua Wang, Victor L Perez
PURPOSE: To evaluate the anterior keratoprosthesis-cornea interface in eyes with Boston type I keratoprosthesis (Kpro). METHODS: In a prospective non-interventional study, patients with Boston type I Kpro underwent ultra-high resolution optical coherence tomography (UHR-OCT) evaluation. The images were used to measure and describe characteristics of the anterior keratoprosthesis-cornea interface, epithelial interaction at the keratoprosthesis edge and the keratoprosthesis-cornea interface gap...
January 2015: Journal of Ophthalmic & Vision Research
Siamak Zarei-Ghanavati, Reza Alizadeh, Sophie X Deng
PURPOSE: To report the results of topical interferon alpha-2b (IFNα2b) for the treatment of ocular surface squamous neoplasia (OSSN) with 360° limbal involvement. METHODS: In a prospective observational study, five patients with biopsy proven primary or recurrent OSSN with 360° limbal involvement received topical IFNα2b (3 million IU/ml, 4 times daily) and were followed from 8 to 12 months. Outcome measures included resolution of the lesion, relief of symptoms, systemic and ocular side effects, and recurrence rate...
October 2014: Journal of Ophthalmic & Vision Research
Siamak Zarei Ghanavati, Mohamed Abou Shousha, Carolina Betancurt, Victor L Perez
The authors report the long-term results of combined conjunctival autograft and overlay amniotic membrane transplantation (AMT) for treatment of pterygium as a new surgical technique. Nineteen patients including 12 male and 7 female subjects with pterygium (primary, 14 cases; recurrent, 5 cases) underwent combined conjunctival autograft and overlay AMT and were followed from 10 to 26 months. Mean age was 44.21±12.49 (range, 29.0-73.0) years. In one patient with grade T3 primary pterygium, the lesion recurred (5...
July 2014: Journal of Ophthalmic & Vision Research
Siamak Zarei-Ghanavati, Mehran Zarei-Ghanavati, Shadi Sheibani
PURPOSE: To describe a case of traumatic wound dehiscence after deep anterior lamellar keratoplasty. METHOD: Observational case report. CASE REPORT: A 31-year-old man who had undergone deep anterior lamellar keratoplasty using big-bubble technique for keratoconus 3 months earlier presented to emergency room after blunt trauma.On examination, visual acuity was counting fingers at 2 m. The corneal graft wound dehisced from 12 to 3 o'clock (90 degrees) with localized suture ruptures, but the anterior chamber was deep and the Seidel test was negative...
February 2010: Cornea
Siamak Zarei-Ghanavati, Hamid Gharaee, Alireza Eslampour, Mojtaba Abrishami, Soamaye Ghasemi-Moghadam
The goal of this study was to compare differences in the mean angle kappa and its intercepts before and after photorefractive keratectomy (PRK) for myopia. In a prospective controlled study, myopic patients were treated with aspheric wavefront-guided (personalized) PRK with a Bausch & Lomb Technolas 217z excimer laser. The manifest refraction, visual acuity, and angle kappa were evaluated preoperatively and at 1 and 6 months postoperatively. The same operator performed all angle kappa measurements using Orbscan IIz...
February 2014: International Ophthalmology
Mohammad-Ali Javadi, Siamak Zarei-Ghanavati
The number of people with diabetes mellitus is increasing and cataracts are one of the most common causes of visual impairment in these subjects. Advances in cataract surgical techniques and instrumentation have generally improved the outcomes; however,surgery may not be safe and effective in certain individuals with pre-existing retinal pathology or limited visual potential. This review article aims to address different aspects surrounding cataracts in diabetic patients. In a computerized MEDLINE search,relevant studies were selected by two authors using the keywords "diabetes mellitus", "cataract", "diabetic retinopathy" and "diabetic maculopathy"...
January 2008: Journal of Ophthalmic & Vision Research
Mary Ellen Sy, Arturo Ramirez-Miranda, Siamak Zarei-Ghanavati, Jamison Engle, Jennifer Danesh, D Rex Hamilton
PURPOSE: To compare the maximum posterior elevation (MPE) measurements before and after LASIK using a dual rotating Scheimpflug (DRS) imaging system (Galilei, Ziemer Ophthalmic Systems, Port, Switzerland) and a scanning slit-beam (SSB) imaging system (Orbscan IIz, Bausch & Lomb, Rochester, NY). METHODS: This retrospective study included 78 eyes from 78 patients who underwent myopic LASIK. Preoperative and postoperative data collected included anterior and posterior best-fit sphere radius and axial curvature readings, posterior central elevation (PCE), and MPE relative to a best-fit sphere using a 7...
February 2013: Journal of Refractive Surgery
Sonia H Yoo, Florence Cabot, Damien Gatinel, Renato Ambrósio, Yakov Goldich, Siamak Zarei-Ghanavati
No abstract text is available yet for this article.
January 2013: Journal of Cataract and Refractive Surgery
Ali A Sabermoghaddam, Siamak Zarei-Ghanavati, Mojtaba Abrishami
PURPOSE: The goal of this study was to compare higher-order aberrations before and after upper lid chalazion excision. METHODS: Fourteen eyes from 12 patients (8 females, mean age: 28.7 ± 2.7 years) with upper lid chalazion were enrolled in this prospective interventional case series. Chalazia were excised by standard transconjunctival vertical incision. Ocular aberrations were evaluated by aberrometry (ZyWave) before and 2 months after chalazion excision. RESULTS: Root mean square of total higher-order aberrations decreased from 0...
June 2013: Cornea
Siamak Zarei-Ghanavati, Mohammad-Ali Javadi, Shahin Yazdani
PURPOSE: To report an interesting case of concomitant bilateral Terrien's marginal degeneration-like corneal ectasia and posterior polymorphous corneal dystrophy in a young man with quiescent rheumatoid arthritis. CASE REPORT: A 24-year-old man with history of rheumatoid arthritis presented with bilateral decreased vision since four years ago. Slit lamp examination revealed bilateral circumferential peripheral corneal thinning and bulging with vascularization and lipid deposition in addition to band-like lesions in descemet's membrane...
January 2012: Journal of Ophthalmic & Vision Research
Mirnaghi Moosavi, Ahmad Sareshtedar, Siamak Zarei-Ghanavati, Mehran Zarei-Ghanavati, Nazanin Ramezanfar
PURPOSE: To investigate the association between senile corneal arcus and atherosclerosis risk factors in patients with recent acute myocardial infarction. METHODS: In this cross sectional study, atherosclerosis risk factors including fasting blood sugar, total cholesterol and triglyceride levels were measured in 165 patients with recent (less than three months' duration) acute myocardial infarction. Slitlamp examination was performed to detect corneal arcus. Associations between senile corneal arcus and atherosclerosis risk factors were assessed...
October 2010: Journal of Ophthalmic & Vision Research
Mohammad Zare, Mohammad-Ali Javadi, Bahram Einollahi, Alireza Baradaran-Rafii, Siamak Zarei Ghanavati, Mohammad-Reza Jamshidi Farsani, Parviz Mohammadi, Sepehr Feizi
PURPOSE: To report the indications and techniques of corneal transplantation at a tertiary referral center in Tehran over a 3-year period. METHODS: Records of patients who had undergone any kind of corneal transplantation at Labbafinejad Medical Center, Tehran, Iran from March 2004 to March 2007 were reviewed to determine the indications and types of corneal transplantation. RESULTS: During this period, 776 eyes of 756 patients (including 504 male subjects) with mean age of 41...
April 2010: Journal of Ophthalmic & Vision Research
Siamak Zarei-Ghanavati, Bizhan Malaekeh-Nikouei, Reza Pourmazar, Sajad Seyedi
PURPOSE: The aim of this study was to evaluate the intraocular pressure (IOP) increasing effect and bioavailability of triamcinolone acetonide (TA) microspheres, as a novel drug delivery system, after intravitreal administration. METHODS: Microspheres loaded by TA were prepared by the solvent evaporation method. After encapsulation, the final microspherical formulation was tested in an animal model. The left eyes of rabbits received microspherical TA and the right eyes were injected with conventional TA suspension...
October 2012: Journal of Ocular Pharmacology and Therapeutics
Siamak Zarei-Ghanavati, Mehran Zarei-Ghanavati
Herein we describe a technique for management of large inadvertent full-thickness trephination during deep anterior lamellar keratoplasty using the big-bubble technique without converting to penetrating keratoplasty. First, the anterior chamber is formed with an ophthalmic viscosurgical device (OVD). Then, the full-thickness wound is secured with one X-type 10-0 nylon suture. A 27-gauge needle is attached to a 2 ml air-filled syringe and inserted into the corneal stroma in the meridian opposite to the site of full-thickness trephination...
January 2011: Journal of Ophthalmic & Vision Research
Siamak Zarei-Ghanavati, Arturo Ramirez-Miranda, Fei Yu, D Rex Hamilton
PURPOSE: To evaluate and compare corneal biomechanical waveform parameters between keratoconic and post-femtosecond laser in situ keratomileusis (LASIK). SETTING: Jules Stein Eye Institute, University of California, Los Angeles, California, USA. DESIGN: Comparative case series. METHODS: The Ocular Response Analyzer was used to obtain the corneal hysteresis (CH), corneal resistance factor (CRF), and 39 biomechanical waveform parameters in manifest keratoconic eyes and post-femtosecond LASIK eyes...
April 2012: Journal of Cataract and Refractive Surgery
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"