Ugur Gürlevik

Dr. Ugur Gürlevik

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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 January 2022 in International Ophthalmology
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Journal Article
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UGUgur Gürlevik
Ugur Gürlevik
FKFunda Kemeriz
Funda Kemeriz
EYErdogan Yasar
Erdogan Yasar

1 January 2021 in Indian Journal Of Ophthalmology
Verified
Journal Article
Open access
UGUgur Gürlevik
Ugur Gürlevik
AKAhmet Karakoyun
Ahmet Karakoyun
EYErdogan Yasar
Erdogan Yasar
Purpose: This study aimed to reveal the cause of meibomian gland disease and meibomian gland loss in patients with Sjögren's syndrome (SS) as the leading factor for dry eyes. Methods: The study included a total of 30 patients with SS and dry eye symptoms and a control group of 50 age- and gender-matched healthy subjects. The dryness parameters of all the participants were evaluated. At first, meibography was performed to measure meibomian gland loss using noninvasive methods. Later, meibomian gland expression and secretion quality were evaluated using silt-lamp biomicroscopy. Correlations between the measurements were analyzed statistically. Results: In patients with SS, MG loss was significantly greater than in the control group (19.7 ± 71%, 12.7 ± 9.6%, P < 0.001). All dry eye parameters (tear film breakup time, Schirmer's test score, OSDI, stain score, dry eye disease) were statistically significant in the SS group. There was an extremely negative correlation between upper MB loss and BUT (P = 0.08, r: 0.781). There was an extremely positive correlation between upper MB loss and staining (P = 0.015, r: 0.739). An extremely negative correlation was determined between sub-MB loss and BUT (P = 0.18, r:-0.781), and a moderately positive significant correlation was found between sub-MB loss and staining (P = 0.031, r: 0.659). Conclusion: The results of this study demonstrated that patients with SS were at a higher risk of being exposed to meibomian gland loss, which directly leads to the severe dry eye symptoms associated with SS.

28 June 2021 in Pakistan Journal of Medical Sciences
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Journal Article
Open access
HKHalil Kara
Halil Kara
EYErdogan Yasar
Erdogan Yasar
UGUgur Gürlevik
Ugur Gürlevik
Objective: To investigate in detail the exact relationship between Pseudomyopia, also termed accommodative spasm, and psychiatric disorders. Methods: Twenty-one young people between the ages of 12-18 who were diagnosed with pseudomyopia between March 2019 and July 2020 in the ophthalmology eye clinic of a university hospital, Turkey were included in the study. A difference of at least 2.20 D between refractive error measurements before and after cycloplegic drop was accepted as pseudomyopia. Scl-90-r symptom screening scale was applied to each case. Afterwards, each case was evaluated by k-sads-pl-dsm-5-t semi-structured technique according to age. The relationship between psychiatric disorders in cases of pseudomyopia was examined. Results: The average age of patients in the study was 15,4 ± 1,9 (12-18), 13 (61,9%) girl and 8 (38,1%) boy. The mean initial refraction was -4,19D ± 2,48D (-1,75D /-8,50D), and the result refraction was +0,38D ± 0,22D (0,25D / -1,00D). The average amount of accommodation was 4,56D ± 2,59D (2,25D / 9,50D). Following the SCL-90-R screening scale and psychiatric evaluation, five generalized anxiety disorders, three obsessive compulsive disorders, three panic disorders, one social anxiety disorder, one posttraumatic stress disorder, one conversion disorder, one major depressive disorder were diagnosed. As a result, 15 (71,4%) of 21 patients were treated with a psychiatric diagnosis. In addition, a positive correlation (p: 0,010-r: 0,621, p: 0,029-r: 0,546) was detected between anxiety- somatization scores and accommodation amount. Conclusions: It is necessary to request psychiatric consultation in each case of pseudomyopia. Comorbidity of anxiety and depressive disorders is more common in pseudomyopia cases. In addition, as the severity of psychiatric symptoms increases, the amount of accommodation also appears to increase. doi: https://doi.org/10.12669/pjms.37.5.3991 How to cite this:Kara H, Yasar E, Gurlevik U. Is pseudomyopia associated with anxiety and related disorders? Pak J Med Sci. 2021;37(5):1514-1518. doi: https://doi.org/10.12669/pjms.37.5.3991 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

8 August 2021 in International Journal Of Clinical Practice
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Journal Article
Closed access
UGUgur Gürlevik
Ugur Gürlevik
HKHalil Kara
Halil Kara
EYErdogan Yasar
Erdogan Yasar

1 October 2020 in Cutaneous and Ocular Toxicology
Verified
Journal Article
Closed access
EYErdogan Yasar
Erdogan Yasar
UGUgur Gürlevik
Ugur Gürlevik
FKFunda Kemeriz
Funda Kemeriz
EAEray Atalay
Eray Atalay
Purpose To investigate the effect of oral isotretinoin use on refractive error, axial length, and anteroposterior segment parameters. Materials and methods In this prospective study, 50 eyes of 50 patients using isotretinoin with a diagnosis of acne vulgaris and 50 eyes of 50 healthy control subjects were included. After detailed biomicroscopy, measurements were taken of axial length, lens thickness, central corneal thickness, anterior chamber depth, central retinal thickness, and subfoveal choroidal thickness. The pupils of both eyes were dilated with one drop of cycloplegic drops after refraction measurement. Visual acuity examination was performed with a Snellen chart the next day. The same procedure was repeated at the end of the third and sixth month of drug treatment. Results Forty-seven patients with acne vulgaris and 45 healthy controls met the inclusion criteria and were included in the analysis. The mean ages of the patients and the controls were 21.7 +/- 2.5 years (range, 18-28 years) and 22.6 +/- 2.7 years (range, 19-27 years), respectively. No significant changes were observed in any parameters in the third and sixth month in the control group (p > 0.05). The most important result was significant increases in myopia and axial length in the sixth month of isotretinoin use (p = 0.01, p = 0.04, respectively). There were no significant relationships between increases in myopia and axial length and patients' age, sex, drug dose, and initial refraction (p > 0.05). The changes in spherical equivalent and axial length differed significantly between the drug group and the control group (p = 0.001, p = 0.001, respectively). Conclusions Isotretinoin is one of the important molecules in the aetiology of myopia. Oral isotretinoin treatment may increase myopia and axial length, although not to a clinically significant degree. However, as this was a pilot study, there is a need for further studies with more patients and longer follow-up periods.

9 May 2020 in Clinical Rheumatology
Verified
Journal Article
Closed access
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UGUgur Gürlevik
Ugur Gürlevik
AKAhmet Karakoyun
Ahmet Karakoyun
EYErdogan Yasar
Erdogan Yasar