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    • Arif Omar Khan

      Arif Omar Khan

      Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio, USA. | Eye Institute, Cleveland Clinic Abu Dhabi, Abu ...

       

       

      KOL Resume for Arif Omar Khan

      Year
      2022

      Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio, USA.

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates.

      2021

      Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio, USA

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, UAE.

      2020

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates; and Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio.

      Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh 11564, Saudi Arabia

      2019

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates; and.

      Department of Ophthalmology, Lerner College of Medicine of Case Western University, Cleveland, Ohio.

      2018

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates; Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio,

      Department of Genetics, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia

      2017

      King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

      Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates, View further author information

      2016

      b Eye Institute, Cleveland Clinic Abu Dhabi , Abu Dhabi , United Arab Emirates.

      2015

      Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia, Department of Genetics, King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia.

      King Khaled Eye Specialist Hospital, P.O. Box 7191, 11462, Riyadh, Kingdom of Saudi Arabia

      2014

      a Division of Pediatric Ophthalmology , King Khaled Eye Specialist Hospital , Riyadh , Saudi Arabia .

      2013

      Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia.

      King Khaled Eye Specialist Hospital Pediatric Ophthalmology Riyadh Saudi Arabia

      Department of Genetics

      2012

      Department of Retina, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia

      2011

      Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital (Dr Khan)

      Department of Genetics, King Faisal Specialist Hospital and Research Center (Drs Khan and Al Tassan, and Mss Shinwari, Al-Sharif, and Khalil), Riyadh, Saudi Arabia.

      2010

      King Khaled Eye Specialist Hospital, Pediatric Ophthalmology, Riyadh, Saudi Arabia.

      2009

      Department of Genetics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia

      2008

      Division of Pediatric Ophthalmology, King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia

      2007

      Riyadh, Saudi Arabia

      2006

      Division of Radiology, King Khaled Eye Specialist Hospital, Riyadh, Saudi Arabia

       

       

      Arif Omar Khan: Influence Statistics

      Sample of concepts for which Arif Omar Khan is among the top experts in the world.
      Concept World rank
      cycloplegic refraction keratometry #1
      g1961e l857p #1
      kera adult #1
      thick geographic #1
      ps44x #1
      children infantile cataract #1
      phenotype recessive #1
      l857p g1961e #1
      isolated microcornea #1
      cataract arabian #1
      middle east studies #1
      protean manifestations children #1
      subject report #1
      recessive cerkl mutations #1
      purpose kif21a #1
      otolithoculomotor pathway eyelids #1
      children inbred families #1
      followup optical coherence #1
      allele g1961e #1
      xlrs electronegative erg #1
      retinal carrier #1
      fixation preference eye #1
      cyp1b1 negative #1
      severe norrie disease #1
      milder phenotype mother #1
      syndrome donnai #1
      ocular saudi #1
      col25a1 mutations #1
      2tailed unpaired ttest #1
      children lrp2 mutation #1
      symptomatic maternal aunt #1
      slc4a4 mutation #1
      recessive col25a1 #1
      clinical presentation bradyopsia #1
      lrp2 donnai #1
      pax6 sequencing #1
      otolithoculomotor pathway #1
      siblings cfeom #1
      intraoperative mitomycinc #1
      recognizable patterns #1
      “small eye” phenotypes #1
      preoperative measured biometry #1
      knobloch syndrome myopia #1
      corneal haze scarring #1
      aunts phenotype #1
      synergistic divergence study #1
      nuclear gene lonp1 #1
      cfeom1 arabian peninsula #1
      ccdd duane #1
      valsalva phenomenon #1

       

      Prominent publications by Arif Omar Khan

      KOL-Index: 10790

      PURPOSE: To report the relative risk for aphakic glaucoma as a function of age at surgery in infants who underwent cataract surgery before 10 months of age for nontraumatic infantile cataract without microcornea.

      METHODS: This was an institutional retrospective case series (January 1985 to February 2003) of children who underwent cataract surgery without intraocular lens implantation for nontraumatic infantile cataract before 10 months of age. Patients with less than 5 years' ...

      Known for Aphakic Glaucoma | Cataract Surgery | 10 Months Age | Anterior Vitrectomy | 31 Patients
      KOL-Index: 10651

      PURPOSE: To explore the relationships among cycloplegic refraction, keratometry, and axial length in children with refractive accommodative esotropia and to evaluate the feasibility of axial length estimation from the other 2 parameters.

      METHODS: This is a prospective case series of children ages 4-12 years who were diagnosed with refractive accommodative esotropia, cooperative for keratometry and optical biometry by the IOLMaster, and without amblyopia in the right eye. The right eyes ...

      Known for Axial Length | Cycloplegic Refraction | Accommodative Esotropia | Optical Biometry | Prospective Case Series
      KOL-Index: 10606

      IMPORTANCE: Infantile cataract surgery bears a significant risk for postoperative glaucoma, and no consensus exists on factors that may reduce this risk.

      OBJECTIVE: To assess the effect of primary intraocular lens implantation and timing of surgery on the incidence of postoperative glaucoma.

      DATA SOURCES: We searched multiple databases to July 14, 2013, to identify studies with eligible patients, including PubMed, MEDLINE, EMBASE, ISI Web of Science, Scopus, Central, Google Scholar, ...

      Known for Postoperative Glaucoma | Cataract Surgery | Lens Implantation | Primary Intraocular | Patient Data
      KOL-Index: 10557

      AIM: To report complications and 2-year valve survival following Ahmed valve implantation during the first 2 years of life.

      METHODS: Retrospective institutional case series.

      RESULTS: Forty-two eyes of 36 patients with Ahmed valve implantation (without prior drainage device surgery) during the first 2 years of life and 2 years' postsurgical follow-up were identified. Most eyes had primary congenital glaucoma (28/42, 66.7%), aphakic glaucoma (5/42, 11.9%) or Peters anomaly (5/42, 11.9%). ...

      Known for 2 Years | Valve Implantation | Tube Exposure | Retinal Detachment | Intraocular Pressure
      KOL-Index: 10532

      Retinitis pigmentosa (RP) and Leber congenital amaurosis (LCA) are major causes of blindness. They result from mutations in many genes which has long hampered comprehensive genetic analysis. Recently, targeted next-generation sequencing (NGS) has proven useful to overcome this limitation. To uncover "hidden mutations" such as copy number variations (CNVs) and mutations in non-coding regions, we extended the use of NGS data by quantitative readout for the exons of 55 RP and LCA genes in ...

      Known for Retinal Dystrophies | Coding Exons | Mutations Genes | Generation Sequencing | Cnv Analysis
      KOL-Index: 10412

      PURPOSE: This study was initiated to identify causal mutations responsible for autosomal recessive congenital cataracts in consanguineous familial cases.

      METHODS: Affected individuals underwent a detailed ophthalmological and clinical examination, and slit-lamp photographs were ascertained for affected individuals who have not yet been operated for the removal of the cataractous lens. Blood samples were obtained, and genomic DNA was extracted from white blood cells. A genome-wide scan ...

      Known for Congenital Cataracts | Familial Cases | Human Pair | Genomic Dna | Str Markers
      KOL-Index: 10321

      PURPOSE: FOXC1 mutations result in Axenfeld-Rieger syndrome, a disorder characterized by a broad spectrum of malformations of the anterior segment of the eye and an elevated risk for glaucoma. A novel FOXC1 W152G mutation was identified in a patient with aniridia. Molecular analysis was conducted to determine the functional consequences of the FOXC1 W152G mutation.

      METHODS: Site-directed mutagenesis was used to introduce the W152G mutation into the FOXC1 complementary DNA. The levels of ...

      Known for Molecular Analysis | Foxc1 Mutations | Cytochrome P450 | Anterior Segment | Transcription Factors
      KOL-Index: 10105

      PURPOSE: Brittle cornea syndrome 1 (BCS1) is a rare recessive condition characterized by extreme thinning of the cornea and sclera, caused by mutations in ZNF469. Keratoconus is a relatively common disease characterized by progressive thinning and ectasia of the cornea. The etiology of keratoconus is complex and not yet understood, but rare ZNF469 variants have recently been associated with disease. We investigated the phenotype of BCS1 carriers with known pathogenic ZNF469 mutations, ...

      Known for Znf469 Keratoconus | Cornea Syndrome | Coding Variants | Blood Samples | Genomic Dna
      KOL-Index: 10030

      PURPOSE OF REVIEW: To provide an overview of the genetics of the primary open-angle glaucomas with particular attention to congenital, infantile, and juvenile forms.

      RECENT FINDINGS: Mutations in CYP1B1, in addition to being the most common identifiable cause of autosomal recessive primary congenital/infantile glaucoma, can infrequently underlie juvenile and even primary adult-onset open-angle glaucoma, particularly in certain consanguineous populations. In 2009, patients diagnosed with ...

      Known for Primary Glaucoma | Genetic Testing | Variable Expressivity | Ectopia Lentis | Juvenile Angle
      KOL-Index: 9275

      Joubert syndrome (JS) is a recessive neurodevelopmental disorder characterized by hypotonia, ataxia, abnormal eye movements, and variable cognitive impairment. It is defined by a distinctive brain malformation known as the "molar tooth sign" on axial MRI. Subsets of affected individuals have malformations such as coloboma, polydactyly, and encephalocele, as well as progressive retinal dystrophy, fibrocystic kidney disease, and liver fibrosis. More than 35 genes have been associated with ...

      Known for Joubert Syndrome | Basal Body | Ciliopathy Phenotypes | Retinal Dystrophy | Primary Cilium
      KOL-Index: 9072

      PURPOSE: To evaluate the effect of intraoperative mitomycin-C (MMC) on polypropylene Ahmed glaucoma valve (AGV) survival 2 years after implantation during the first 2 years of life.

      DESIGN: Retrospective institutional comparative series (1995-2005).

      PARTICIPANTS: Thirty-one eyes of 27 patients (23 unilateral, 4 bilateral; 16 boys, 11 girls) undergoing AGV implantation at a mean age of 11.1 months (standard deviation [SD], 5.46), all of which had 2 years of regular postoperative ...

      Known for 2 Years | Agv Implantation | Intraoperative Mitomycin | Ahmed Valve | Intraocular Pressure
      KOL-Index: 8900

      We have previously described a syndrome characterized by facial dysmorphism, lens dislocation, anterior-segment abnormalities, and spontaneous filtering blebs (FDLAB, or Traboulsi syndrome). In view of the consanguineous nature of the affected families and the likely autosomal-recessive inheritance pattern of this syndrome, we undertook autozygosity mapping and whole-exome sequencing to identify ASPH as the disease locus, in which we identified two homozygous mutations. ASPH encodes ...

      Known for Traboulsi Syndrome | Ectopia Lentis | Facial Dysmorphism | Spontaneous Filtering Blebs | Missense Mutations
      KOL-Index: 8645

      PURPOSE: To report the genetic basis for congenital glaucoma with clinical aniridia in an infant and a milder phenotype in her mother.

      METHODS: Prospective case series.

      RESULTS: An infant girl with almost complete lack of iris tissue was referred and treated for congenital glaucoma. Although the presumed clinical diagnosis was aniridia (On-line Mendelian Inheritance in Man [OMIM] AN2, # 106210), PAX6 sequencing was normal. Examination of the infant's mother was significant for ...

      Known for Congenital Glaucoma | Foxc1 Mutation | Transcription Factors | Iris Hypoplasia | Intraocular Pressure
      KOL-Index: 8420

      BACKGROUND: Knobloch syndrome is defined as a triad of occipital defect, high myopia and vitreo-retinal degeneration (often with later retinal detachment); however, the ocular phenotype is not well defined. This report characterises eye findings of the syndrome in children with genetically confirmed disease.

      METHODS: Case series of Saudi children with previously documented homozygous mutations in COL18A1 or ADAMTS18.

      RESULTS: All eight children (4-15 years old; five families) had smooth ...

      Known for Knobloch Syndrome | Ectopia Lentis | Retinal Detachment | Occipital Defect | Ocular Phenotype
      KOL-Index: 8275

      PURPOSE: To determine the genetic basis for congenital total white cataract with microcornea in three affected siblings.

      DESIGN: Prospective interventional case series.

      METHODS: Clinical ophthalmic examination, venous blood sampling for linkage analyses, and diagnostic testing of identified candidate gene(s).

      RESULTS: Three siblings had congenital total white cataract with microcornea; the parents and seven other siblings were asymptomatic. Linkage analysis mapped the phenotype to Hsa ...

      Known for Cryaa Mutation | Congenital Cataract | Female Genes | Lod Score | Linkage Analysis

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      Arif Omar Khan:Expert Impact

      Concepts for whichArif Omar Khanhas direct influence:Saudi arabia,  Arabian peninsula,  Axial length,  2 years,  Cornea plana,  Lens subluxation,  Pediatric cataract,  Middle east.

      Arif Omar Khan:KOL impact

      Concepts related to the work of other authors for whichfor which Arif Omar Khan has influence:Retinitis pigmentosa,  Congenital cataract,  Joubert syndrome,  Exome sequencing,  Retinal degeneration,  Genetic testing,  Visual acuity.


       

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      Department of Ophthalmology, Cleveland Clinic Lerner College of Medicine of Case Western University, Cleveland, Ohio, USA. | Eye Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, United Arab Emirates. | Eye Institute, Cleveland Clinic Abu Dhabi, Abu

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