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Search Results: 1 - 10 of 20114 matches for " Khalid Al Arfaj "
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Spontaneous corneal perforation in ocular rosacea
Al Arfaj Khalid,Al Zamil Waseem
Middle East African Journal of Ophthalmology , 2010,
Abstract: Rosacea is a dermatologic condition that affects the midfacial region. Ocular rosacea is most frequently diagnosed when cutaneous signs and symptoms are also present. Ocular manifestations are essentially confined to the eyelids and ocular surface. Ocular involvement ranges from minor irritation, dryness, and blurry vision to potentially severe ocular surface disruption including corneal ulcers, vascularization and rarely perforation. We present a 49-year-old Saudi Arabian female with the diagnosis of rosacea who presented with a peripheral corneal performation. The perforation was successfully managed by surgical repair, oral doxycycline and topical steroid. The final best corrected visual acuity was 20/30 after treatment. Early referral to an ophthalmologist and careful long-term follow-up are recommended.
Myxoma of the cornea
Alkatan Hind,Al-Arfaj Khalid
Annals of Saudi Medicine , 2008,
A Fuzzy Model Approach for Selecting IP Carriers: A Case Study of Greek ISP
Karamitsos Ioannis,Al-Arfaj Khalid,Apostolopoulos Charalampos
International Journal of Soft Computing , 2012, DOI: 10.3923/ijscomp.2011.33.39
Abstract: Modern global market has totally changed abandoning old fashion orientation strategies similar to production and sales ones. Gradually markets adopted well-developed marketing orientation strategies in order to assist companies to survive. Taking into account the world s financial situation and the recent crisis, most of the companies try to minimize the risks but in the mean time try to retain their competitive advantage. With the aid of Supply Chain Management (SCM) individual functions of companies are being integrated so as to form the supply chain network. This study illustrates a case study of IP carriers selection and evaluation for supplier management. More specifically with the use of a fuzzy model and the combination of quantitative and qualitative models IP carriers selection is made.
Conjunctival nevi: Clinical and histopathologic features in a Saudi population
Alkatan Hind,Al-Arfaj Khalid,Maktabi Azza
Annals of Saudi Medicine , 2010,
Abstract: Background and Objective : Conjunctival nevi are benign lesions with wide variation in clinical and histopathological features. The differentiation between benign nevi and other pigmented lesions is essential. The aim of our study was to identify the distribution of the histopathologic types of conjunctival nevi among the Saudi population and to provide the basic knowledge needed for proper clinical diagnosis. Patients and Methods : This retrospective study of surgically excised benign conjunctival nevi was conducted at a tertiary care eye hospital from 1995 to 2006. Clinical data was collected from medical records and the histopathologic features reviewed by a single pathologist. Results : A total 105 conjunctival nevi were included from 104 consecutive patients (mean age, 26 years, 54 males and 50 females). The anatomical location was the bulbar conjunctiva in 83%, juxtalimbal in 12%, caruncle in 4% and palpebral in 1%. The lesion was removed for cosmetic reasons in 38% while 8% of the lesions were removed to rule out malignancy. The compound nevus was the commonest (72%) in all age groups, followed by subepithelial nevus (24%) and finally junctional nevus (3%). Conclusions : The distribution of the histopathologic types of this tumor in our population matches the pattern in other areas of the world with the compound nevus being the commonest lesion. However, fewer lesions among our patients are removed to rule out malignancy.
Phototherapeutic Keratectomy Outcomes in Superficial Corneal Opacities
Khalid Al Arfaj, Vandana Jain, Mohamed Hantera, Mohamed Wagih El-Deeb, Adel Al Rushod, Akshay G Nair and Roberto Pineda
Ophthalmology and Eye Diseases , 2012, DOI: 10.4137/OED.S5985
Abstract: Purpose: Compare the effectiveness of Phototherapeutic keratectomy (PTK) in treatment corneal dystrophies versus superficial corneal scars: visual outcomes, recurrence rate and safety profile. Methods: PTK was performed in 51 eyes of 51 patients. Data regarding the indications for PTK, ablation depth, symptomatic relief, pre-and postoperative best spectacle-corrected visual acuity (BSCVA), spherical equivalent changes, recurrence and complications were analyzed. The indications for PTK in our study were classified into two categories – group A: patients with corneal dystrophies (n = 23) and the other group B (n = 28) with other indications. Results: The average age of the patients was 47 years (±16.4). The mean follow up period was 15.16 months (±10.01 months). Post operatively, there were no significant complications. While the overall BSCVA in the patients improved from 20/41 (0.484) to 20/32 (0.645), group A showed improvement from 20/35 (0.561) to 20/29 (0.687), as compared to group B in which BSCVA improved from 20/47 (0.421) to 20/33 (0.611). The most common indication in group A was granular corneal dystrophy (n = 10) and the most common indication in group B was post traumatic/infectious corneal scar or opacity (n = 10). Eighty-six percent (n = 44) of all patients had alleviation of symptoms. Recurrence of symptoms was seen in 3 eyes of recurrent corneal erosions which required retreatment. Conclusion: PTK is a safe and effective procedure. The outcome of this study suggests that PTK improves BSCVA. PTK appears to improve ocular surface health. Furthermore, PTK can be recommended to most patients with corneal dystrophies as a treatment modality prior to other more invasive procedure (viz. penetrating keratoplasty).
Esophageal carcinoma presenting as seronegative symmetrical synovitis with pitting edema
Al-Arfaj Abdulrahman
Saudi Journal of Gastroenterology , 2001,
Familial Eosinophilic Granulomatosis with Polyangiitis  [PDF]
Abdurhman S. Al Arfaj, Mohammad Al Anazi, Najma Khalil, Akbar Ali Khan Pathan, Narsimha Reddy Parine
Open Journal of Rheumatology and Autoimmune Diseases (OJRA) , 2017, DOI: 10.4236/ojra.2017.73013
Abstract: Eosinophilic granulomatosis with polyangiitis (EGPA) is an uncommon ANCA associated vasculitic disorder characterized by systemic necrotizing vasculitis of small vessels occurring exclusively among patients with bronchial asthma and tissue eosinophilia. Familial EGPA is extremely rare. Only two case reports have been published so far. We present a Saudi family with 3 cases of EGPA and almost three-fourths of family members affected by asthma. We explored genetic basis of EGPA in this family and found that genes were mutated in four affected siblings suggesting genetic involvement in susceptibility to EGPA.
Application of the watershed method and the topological gradient approach in the detection of vehicles on highways
L. Jaafar Belaid,T. Al Arfaj
Applied Mathematical Sciences , 2013,
Abstract: The main goal of this work is to present a mathematical methodfor the detection of vehicles on highways. To achieve this goal, we proposean approach based on a coupled method between the watershedtransformation and the topological gradient. The HSI (Hue, Saturation,and Intensity) color space is adapted in our method. Differentpropositions to treat the given problem are presented in this work anda survey of some approaches based on both the topological gradient anda watershed technic is presented. We end this paper by some numericaltests.
Herpes Zoster Infections in SLE in a University Hospital in Saudi Arabia: Risk Factors and Outcomes
Afsar Sayeeda,Hussain Al Arfaj,Najma Khalil,A. S. Al Arfaj
Autoimmune Diseases , 2010, DOI: 10.4061/2010/174891
Abstract: Patients with SLE carry an increased risk of infection that account for 11–23% of all hospitalized patients and 50% of all SLE patients develop major infections during the course of their disease. Globally Herpes Zoster has been reported as the most frequent viral infection in SLE patients. We determined the clinical spectrum, disease sequelae and the risk factors associated with the development of Herpes Zoster in patients with SLE and their outcomes. Retrospective case control study of Herpes Zoster infections was done in SLE patients between 1982 and 2006. Cases were matched 1:2 to controls for age, race, sex and duration of follow up. Clinical features of the cases from the time of lupus diagnosis to the time of Zoster were compared to their respective controls over similar time periods. Thirty two SLE cases were compared to sixty four controls. Cases were more likely to have received cyclophosphamide ( ) and intravenous methylprednisolone pulse therapy ( ), MMF ( ), had leucopenia ( ) and hemolytic anemia ( ). More cases than controls had lupus nephritis, cerebritis, thrombocytopenia but the differences did not reach statistical significance. The mean oral prednisolone dose and proportion of patients receiving immunosuppressives including pulse methylprednisolone therapy, IV Cyclophosphamide and mycophenolate was significantly higher in patients with active SLE compared to patients with SLE in remission at the time of Herpes Zoster ( ). Disseminated Zoster developed in patients with active SLE (7/9) compared to patients with SLE in remission (0/23). None of the patients had postherpetic neuralgia or bacterial super infection. Immunosuppressive medications were discontinued at the time of diagnosis of Zoster in 19 of 32 patients and all patients received antiviral medications.There were no permanent neurologic deficits or deaths. We conclude that Herpes Zoster infections occur at increased frequency among patients with SLE and carry significant morbidity. Immunosuppressive therapy and severe manifestations of lupus may be risk factors for the development of Herpes Zoster although not necessarily at the time of disease flare or immunosuppressive therapy. Our study suggests that although Herpes Zoster occurs frequently in patients with SLE, it has a relatively benign course. 1. Introduction Herpes Zoster, a painful vesicular eruption with a dermatomal distribution, is caused by reactivation of a latent Varicella Zoster virus infection [1]. It may be complicated by bacterial superinfection and cutaneous and visceral dissemination of lesions which may
Are the Criteria for Health and Safety Available in Adjustable Saudi School Furniture?  [PDF]
Khalid Al Saleh, Mohamed Ramadan
iBusiness (IB) , 2011, DOI: 10.4236/ib.2011.32027
Abstract: This research investigated the effect of adjustable Saudi chair-table combinations available in the local market on the students' health and safety. Thirty seven young students participated in this research. Ten chair-table combinations, within three different activities (reading, writing, and looking at the blackboard), were the independent variables. Normalized discomfort ratings, and neck dorsal and upper trapezius muscular activities were the dependent variables. Variances among students' body dimensions and classroom furniture were also studied. There were higher levels of neck dorsal and upper trapezius muscular contractions associated with less dimensions of chair-table combinations compared to high dimensions of chair-table combinations. Normalized discomfort ratings at the neck, shoulder, thigh, and feet were significantly higher at high chair-table dimensions. Matched school furniture to the student dimensions was associated with low dimensions of chair-table combinations. The suitability of the local adjustable chair-table combination was not fit to the students’ health. Saudi furniture industry should review and provide the local schools with the most appropriate furniture to Saudi students’ anthropometric dimensions.
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