Developmental Eye Movement™ Test (DEM™)

Features of the Developmental Eye Movement Test™ (DEM™):

• Provides an objective method of assessing fixational and saccadic activity during reading and non-reading tasks.
• Incorporates a sub-test of number calling in a vertical array, allowing for evaluation of oculomotor function with numbers in a horizontal array.
• Developed by Dr. Jack Richman, OD and Dr. Ralph Garzia, OD.
• Includes a manual with instructions and tables of standards based on age and grade level, as well as case histories and clinical treatment considerations.
• Scoring software saves time and prevents errors, and displays comparisons to standardized scores.
• Comes with a pad of evaluation sheets and an expanding carrying case for easy transport and storage.

Several studies have been conducted on the DEM test, including research on its use in comparison to other tests such as the King Devick Test, its impact on visual-verbal skills, its use in neuro-optometric rehabilitation, and its relationship to reading and visual processing skills in children. The studies have been published in various journals such as Journal of Optometry, Optometry Vision Science, Public Library of Science and JAMA Ophthalmology.

Studies Supporting the DEM™:

• King Devick Test VS. Developmental Eye Movement Test , by Basiliki Evelyn Tomaras and Sarah Trommater Senior Class Project 2004
• Garzia RP, Richman JE, Nicholson SB, Gaines CS. "A new visualverbal saccade test: the development eye movement test (DEM)." Journal of Optometry Association. 1990 Feb; 61(2): 124-135
• Garzia RP, Richman JE, Walker AJ. "The impact of automatic digit naming ability on a clinical test of eye movement functioning." Journal of Optometry Association. 19983 Jul;54(7): 617-22.
• Kapoor N, Ciuffreda KJ. "Assessment of neuro-optometric rehabilitation using the Developmental Eye Movement (DEM) test in adults with acquired brain injury." Journal of Optometry. 2017 Jul; S188-4296(17)30040-7.
• Kulp MT, Schmidt PP. "The relation of clinical saccadic eye movement testing to reading in kindergartners and first graders." Optometry Vision Science. 1997 Jan;74(1):37-42.
• Kulp MT, Schmidt PP. "Relationship between visual skills and performance on saccadic eye movement testing." Optometry Vision Science. 1998 Apr; 7 5 ( 4): 284-7.
• Xie Y, Shi C, Tong M, Zhang M, Li T, Xu Y, Guo X, Hong Q, Chi X. "Developmental Eye Movement (DEM) Test Norms for Mandarin Chinese-Speaking Chinese Children." Public Library of Science. 2016 Feb; 26881754.
• "Frequency of Visual Deficits in Children With Developmental Dyslexia." JAMA Ophthalmology
• "Vision and Academic Performance in Primary School Children." School of Optometry and Vision Science and Institute of Health and Biomedical Innovation