Fresnel Prism on Hess Screen Test
Joint Authors
Koh, Kyung Min
Samuel Kim, Ungsoo
Source
Case Reports in Ophthalmological Medicine
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-3, 3 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-04-23
Country of Publication
Egypt
No. of Pages
3
Main Subjects
Abstract EN
A 65-year-old male patient complained of diplopia after a cataract surgery.
He had esotropia of 18 prism diopters (PDs) at distant and near deviation, and therefore, we performed the Hess screen test to identify any abnormal eye movement.
However, the indicator was found to be out of bounds, and therefore, the test could not be completed.
Therefore, the test was subsequently performed with a 20 PD base-out Fresnel prism, and an abduction deficit was observed in the right eye, but not in the left eye.
Therefore, we speculated that the patient had abducens nerve palsy in the right eye.
The results obtained in the present study imply that performing the Hess screen test with the Fresnel prism may be very useful in diagnosing ambiguous abnormalities in patients with extraocular movement.
The Hess screen test can be performed for patients with a strabismus of greater than 15 PD by using a Fresnel prism.
Thus, a Fresnel prism may be useful for performing both the Hess screen test and Lancaster screen test.
American Psychological Association (APA)
Koh, Kyung Min& Samuel Kim, Ungsoo. 2013. Fresnel Prism on Hess Screen Test. Case Reports in Ophthalmological Medicine،Vol. 2013, no. 2013, pp.1-3.
https://search.emarefa.net/detail/BIM-452985
Modern Language Association (MLA)
Koh, Kyung Min& Samuel Kim, Ungsoo. Fresnel Prism on Hess Screen Test. Case Reports in Ophthalmological Medicine No. 2013 (2013), pp.1-3.
https://search.emarefa.net/detail/BIM-452985
American Medical Association (AMA)
Koh, Kyung Min& Samuel Kim, Ungsoo. Fresnel Prism on Hess Screen Test. Case Reports in Ophthalmological Medicine. 2013. Vol. 2013, no. 2013, pp.1-3.
https://search.emarefa.net/detail/BIM-452985
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-452985