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https://www.readbyqxmd.com/read/27435994/corrosion-casts-of-big-bubbles-formed-during-deep-anterior-lamellar-keratoplasty
#1
Sepehr Feizi, Mozhgan Rezaei Kanavi, Davood Kharaghani, Sahar Balagholi, Masoumeh Meskinfam, Mohammad Ali Javadi
PURPOSE: To characterize the walls of big bubbles formed during deep anterior lamellar keratoplasty (DALK) using the corrosion casting technique. METHODS: Fresh corneoscleral buttons with normal transparency and without any known eye diseases (n = 11) were obtained from 11 human donors. A 20-gauge needle was used to inject a solution of 20 % polyvinyl alcohol (PVA) immediately beneath the corneal endothelium to form big bubbles in eight corneoscleral buttons...
July 19, 2016: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/27413496/three-methods-for-correction-of-astigmatism-during-phacoemulsification
#2
Hossein Mohammad-Rabei, Elham Mohammad-Rabei, Goldis Espandar, Mohammad Ali Javadi, Mohammad Reza Jafarinasab, Seyed Javad Hashemian, Sepehr Feizi
PURPOSE: To compare the safety and efficacy of three methods for correcting pre-existing astigmatism during phacoemulsification. METHODS: This prospective, comparative, non-randomized study was conducted from March 2010 to January 2011, and included patients with keratometric astigmatism ≥1.25 D undergoing cataract surgery. Astigmatism was corrected using the following approaches: limbal relaxing incisions (LRI) on the steep meridian, extension and suturing of the phaco incision created at the steep meridian (extended-on-axis incision, EOAI), and toric intraocular lens (tIOL) implantation...
April 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27195082/visual-outcomes-of-successful-versus-failed-big-bubble-deep-anterior-lamellar-keratoplasty-for-keratoconus
#3
Mohammad Ali Javadi, Hossein Mohammad-Rabei, Sepehr Feizi, Seyed-Hashem Daryabari
PURPOSE: To compare the visual outcomes of deep anterior lamellar keratoplasty (DALK) for keratoconus with and without successful big-bubble formation. METHODS: In this retrospective comparative study, a total of 289 consecutive eyes from 257 patients underwent DALK using the big-bubble technique. In cases where the big bubble could not be accomplished, manual stromal dissection down to Descemeton membrane (DM) was performed using a crescent knife. Visual acuity and refractive outcomes were compared between the bare DM group (Group 1) and manual dissection group (Group 2)...
January 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27195079/predictive-ability-of-galilei-to-distinguish-subclinical-keratoconus-and-keratoconus-from-normal-corneas
#4
Sepehr Feizi, Mehdi Yaseri, Bahareh Kheiri
PURPOSE: To determine the predictive ability of different data measured by the Galilei dual Scheimpflug analyzer in differentiating subclinical keratoconus and keratoconus from normal corneas. METHODS: This prospective comparative study included 136 normal eyes, 23 eyes with subclinical keratoconus, and 51 keratoconic eyes. In each eye, keratometric values, pachymetry, elevation parameters and surface indices were evaluated. Receiver operating characteristic (ROC) curves were calculated and quantified by using the area under the curve (AUC) to compare the sensitivity and specificity of the measured parameters and to identify optimal cutoff points for differenciating subclinical keratoconus and keratoconus from normal corneas...
January 2016: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27051491/customized-clinical-practice-guidelines-for-management-of-adult-cataract-in-iran
#5
Zhaleh Rajavi, Mohammad Ali Javadi, Narsis Daftarian, Sare Safi, Farhad Nejat, Armin Shirvani, Hamid Ahmadieh, Saeid Shahraz, Hossein Ziaei, Hamidreza Moein, Behzad Fallahi Motlagh, Sepehr Feizi, Alireza Foroutan, Hassan Hashemi, Seyed Javad Hashemian, Mahmoud Jabbarvand, Mohammad Reza Jafarinasab, Farid Karimian, Hossein Mohammad-Rabei, Mehrdad Mohammadpour, Nader Nassiri, Mahmoodreza Panahi-Bazaz, Mohammad Reza Rohani, Mohammad Reza Sedaghat, Kourosh Sheibani
PURPOSE: To customize clinical practice guidelines (CPGs) for cataract management in the Iranian population. METHODS: First, four CPGs (American Academy of Ophthalmology 2006 and 2011, Royal College of Ophthalmologists 2010, and Canadian Ophthalmological Society 2008) were selected from a number of available CPGs in the literature for cataract management. All recommendations of these guidelines, together with their references, were studied. Each recommendation was summarized in 4 tables...
October 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27051480/visual-and-refractive-outcomes-of-phacoemulsification-with-implantation-of-accommodating-versus-standard-monofocal-intraocular-lenses
#6
Mohammad Mehdi Sadoughi, Bahram Einollahi, Danial Roshandel, Mohammad Sarimohammadli, Sepehr Feizi
PURPOSE: To compare distant and near visual function after cataract surgery with implantation of Crystalens HD or Tek-Clear as accommodating intraocular lenses (IOLs), versus SA60AT as a standard IOL. METHODS: The study included 62 eyes of 58 patients divided into three groups using three different IOLs: Crystalens HD (Bausch and Lomb, NY, USA), Tek-Clear (Tekia, CA, USA) and SA60AT (Alcon, TX, USA) were implanted in 23, 14 and 25 eyes, respectively. Corrected distant visual acuity (CDVA), uncorrected and distance corrected near visual acuities (UCNVA and DCNVA), near point of accommodation (NPA), spectacle freedom and patient satisfaction were assessed six months postoperatively and compared between the three groups...
October 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27051479/effect-of-donor-graft-quality-on-clinical-outcomes-after-penetrating-keratoplasty-for-keratoconus
#7
Sepehr Feizi, Mohammad Ali Javadi, Hassan Ghasemi, Fatemeh Javadi
PURPOSE: To evaluate the effect of donor and eye bank characteristics on graft rating and clinical outcomes after penetrating keratoplasty (PK) for keratoconus. METHODS: This retrospective interventional case series included 252 keratoconic eyes which underwent PK. Donor data included age and sex, cause of death, death-to-preservation time, preservation-to-surgery time, epithelial and stromal status, endothelial cell density (ECD) and morphology, and graft rating...
October 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/27051478/corneal-changes-after-collagen-crosslinking-for-keratoconus-using-dual-scheimpflug-imaging
#8
Mohammad Mehdi Sadoughi, Sepehr Feizi, Siamak Delfazayebaher, Alireza Baradaran-Rafii, Bahram Einollahi, Camelia Shahabi
PURPOSE: To evaluate corneal changes after collagen crosslinking (CXL) therapy for keratoconus (KCN) using the Galilei dual Scheimpflug analyzer. METHODS: This prospective, nonrandomized clinical study included 35 eyes of 32 keratoconus patients who had undergone CXL. The eyes were saturated with riboflavin solution and were subjected for 30 minutes to ultraviolet-A (UV-A) light with irradiance of 3 mW/cm(2). Effectiveness of the treatment was assessed by measuring uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), manifest cylinder/sphere, keratometry, pachymetry, posterior and anterior elevations by the Galilei dual Scheimpflug analyzer...
October 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/26555584/changes-in-corneal-biomechanical-properties-after-descemet-stripping-automated-endothelial-keratoplasty-for-pseudophakic-bullous-keratopathy
#9
COMPARATIVE STUDY
Amir Faramarzi, Sepehr Feizi, Danial Najdi, Leila Ghiasian, Farid Karimian
PURPOSE: To compare corneal biomechanical properties and intraocular pressure (IOP) in eyes with pseudophakic bullous keratopathy (PBK) before and after Descemet stripping automated endothelial keratoplasty (DSAEK). METHODS: This prospective nonrandomized intrasubject comparative study was conducted on 44 eyes of 22 patients with the diagnosis of PBK who underwent DSAEK in one eye. IOP was measured by Goldmann applanation tonometer, and central corneal thickness was measured by ultrasound pachymetry...
January 2016: Cornea
https://www.readbyqxmd.com/read/26541103/big-bubble-deep-anterior-lamellar-keratoplasty-using-central-vs-peripheral-air-injection-a-clinical-trial
#10
Sepehr Feizi, Seyed-Hashem Daryabari, Danial Najdi, Mohammad Ali Javadi, Farid Karimian
PURPOSE: To compare 2 sites of air injection to achieve Descemet membrane (DM) detachment in big-bubble deep anterior lamellar keratoplasty (DALK). METHODS: In this prospective, randomized study, 48 eyes of 48 keratoconus-affected patients who underwent DALK by cornea fellows were enrolled. Each patient was randomly assigned into one of 2 groups. After trephination to approximately 80% of the corneal thickness, a 27-G needle was inserted into the stroma from the trephination site...
June 10, 2016: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/26311063/factors-influencing-big-bubble-formation-during-deep-anterior-lamellar-keratoplasty-in-keratoconus
#11
COMPARATIVE STUDY
Sepehr Feizi, Mohammad Ali Javadi, Seyed-Hashem Daryabari
PURPOSE: To investigate recipient and operative factors that can influence the rate of achieving a bare Descemet's membrane (DM) during deep anterior lamellar keratoplasty (DALK) for keratoconus. MATERIALS: In this retrospective comparative study, a total of 290 (153 right) consecutive eyes from 257 (179 male) keratoconus-affected patients who underwent DALK with the big-bubble technique were enrolled. Univariate analyses and multiple logistic regressions were used to investigate factors including patient age and sex, family history of keratoconus, history of contact lens wear or vernal keratoconjunctivitis, the presence of Vogt's striae or superficial stromal opacities, keratometric readings, corneal diameter, central and peripheral corneal thickness, anterior chamber depth, vitreous length, and trephination size, which could predict achievement of a bare DM...
May 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/26164829/factors-predicting-refractive-outcomes-after-deep-anterior-lamellar-keratoplasty-in-keratoconus
#12
Sepehr Feizi, Mohammad Ali Javadi
PURPOSE: To determine the factors that predict refraction, mean keratometry, and keratometric astigmatism after deep anterior lamellar keratoplasty (DALK) in keratoconus. DESIGN: Consecutive interventional case series. METHODS: This study enrolled 194 consecutive eyes of 181 patients with keratoconus who underwent DALK using the big-bubble technique. Indications for surgery included contact lens intolerance or poor corrected visual acuity...
October 2015: American Journal of Ophthalmology
https://www.readbyqxmd.com/read/26109017/dmek-lenticule-preparation-using-an-air-dissection-technique-central-versus-peripheral-injection
#13
COMPARATIVE STUDY
Sepehr Feizi, Mohammad Ali Javadi
PURPOSE: To compare 2 sites of air injection to prepare donor lenticules for Descemet membrane (DM) endothelial keratoplasty. METHODS: Fifty-one human corneoscleral buttons from donors aged 4 to 57 years were used. Corneoscleral buttons were placed endothelial side up and a 27-G needle was inserted just outside Schwalbe line and advanced immediately beneath the endothelium. Air was injected centrally inside the 8-mm zone (group 1) or peripherally approximately 1 mm in front of the limbus (group 2)...
January 2016: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/26075456/double-ring-sign-to-confirm-correct-orientation-of-donor-lenticules-during-descemet-stripping-automated-endothelial-keratoplasty
#14
Siamak Delfazayebaher, Sepehr Feizi, Mohammad Ali Javadi, Alireza Baradaran-Rafii, Mohammad Mehdi Sadoughi, Amir Faramarzi
PURPOSE: To describe a sign that can confirm the correct position of donor lenticules during Descemet stripping automated endothelial keratoplasty (DSAEK). METHODS: In this clinical and laboratory study, DSAEK was performed in 3 eyes with a diagnosis of pseudophakic bullous keratopathy. Additionally, 2 whole globes and 2 precut corneoscleral buttons were procured for the purpose of the laboratory part of the study. After removal of recipient Descemet membrane, the donor graft was inserted into the anterior chamber, unfolded, and attached to the posterior corneal stroma with an air bubble...
August 2015: Cornea
https://www.readbyqxmd.com/read/26005546/sensitivity-and-specificity-of-posterior-and-anterior-corneal-elevation-measured-by-orbscan-in-diagnosis-of-clinical-and-subclinical-keratoconus
#15
Mohammad Reza Jafarinasab, Ebrahim Shirzadeh, Sepehr Feizi, Farid Karimian, Arash Akaberi, Hosein Hasanpour
PURPOSE: To determine the sensitivity and specificity of anterior and posterior corneal elevation parameters as determined by Orbscan II (Bausch and Lomb, Rochester, NY, USA) in discriminating between (sub) clinical keratoconus (KCN) and normal corneas. METHODS: This prospective case-control study included 28 eyes with subclinical KCN, 65 with clinical KCN and 141 normal corneas. Anterior and posterior corneal elevation was measured and compared in the central 5-mm corneal zone using Orbscan II...
January 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/26005545/measurement-of-central-corneal-thickness-using-ultrasound-pachymetry-and-orbscan-ii-in-normal-eyes
#16
Mohammad Mehdi Sadoughi, Bahram Einollahi, Neda Einollahi, Javad Rezaei, Danial Roshandel, Sepehr Feizi
PURPOSE: To compare ultrasound pachymetry and Orbscan II for measurement of central corneal thickness (CCT) in normal eyes. METHODS: The current study was performed at Labbafinejad Medical Center (LMC), Tehran, Iran. Three hundred eyes from 150 healthy individuals referred for keratorefractive surgery were assessed first by Orbscan II and then by ultrasound pachymetry, and CCT values were recorded and compared. RESULTS: Overall, Orbscan II overestimated CCT as compared to ultrasound pachymetry by about 2...
January 2015: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/25709779/sterile-keratitis-following-collagen-crosslinking
#17
Mohammad-Ali Javadi, Sepehr Feizi
PURPOSE: To report a keratoconic eye that developed severe sterile keratitis and corneal scar after collagen crosslinking necessitating corneal transplantation. CASE REPORT: A 26-year-old man with progressive keratoconus underwent collagen crosslinking and presented with severe keratitis 72 hours after the procedure. The initial impression was infectious corneal ulcer and a fortified antibiotic regimen was administered. However, the clinical course and confocal microscopy results prompted a diagnosis of sterile keratitis...
October 2014: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/25667728/central-and-peripheral-corneal-thickness-measurement-in-normal-and-keratoconic-eyes-using-three-corneal-pachymeters
#18
Sepehr Feizi, Mohammad Reza Jafarinasab, Farid Karimian, Hosein Hasanpour, Ali Masudi
PURPOSE: To assess the agreement among ultrasonic pachymetry, the Galilei dual Scheimpflug analyzer, and Orbscan II for central and peripheral (Galilei vs. Orbscan) corneal thickness (CCT and PCT) measurement in normal and keratoconic eyes. METHODS: In this prospective study, CCT and PCT were measured in 88 eyes of 88 refractive surgery candidates and 128 eyes of 69 keratoconic patients with ultrasonic pachymetry, the Galilei, and Orbscan II. The readings by the three instruments were compared using one-way analysis of normal variance...
July 2014: Journal of Ophthalmic & Vision Research
https://www.readbyqxmd.com/read/25162759/graft-epithelial-defects-after-deep-anterior-lamellar-keratoplasty
#19
Sepehr Feizi, Fatemeh Javadi, Mohammad Ali Javadi
PURPOSE: The aim of this study was to report the incidence of epithelial defects and identify donor factors that might correlate with the presence of epithelial defects and graft reepithelialization time after a deep anterior lamellar keratoplasty (DALK). METHODS: In this retrospective study, 283 consecutive keratoconic eyes underwent DALK using donor corneas of different qualities, ranging from fair to excellent. The donor data included age and sex, cause of death, death-to-preservation time, preservation-to-surgery time, epithelial and stromal status, endothelial cell density and morphology, and graft rating...
November 2014: Cornea
https://www.readbyqxmd.com/read/25079063/modified-big-bubble-deep-anterior-lamellar-keratoplasty-using-peripheral-air-injection
#20
Sepehr Feizi, Amir Faramarzi, Mohammad Ali Javadi, Mohammad Reza Jafarinasab
PURPOSE: To introduce a modification to big-bubble deep anterior lamellar keratoplasty (DALK) which can decrease the risk of Descemet membrane (DM) perforation during air injection. METHOD: In Anwar's big-bubble technique, a 27-guage needle is inserted from the trephination site and advanced into the corneal stroma up to the centre. The technique we introduce modifies the original technique in the following fashion. After trephination to approximately 80% of corneal thickness, a 27-guage needle is inserted into the stroma peripherally from the trephination site towards the limbus...
November 2014: British Journal of Ophthalmology
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