A Novel Computerized Visual Acuity Test for Children
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
Purpose: To investigate the efficacy of a computerized visual acuity test, the SNU visual acuity test for children. Methods: Fifty-six children, ranging from 1 to 5 years of age, were included. In a dark room, children gazed at and followed a circular dot with 50% contrast moving at a fixed velocity of 10 pixels/sec on a computer monitor. Eye movement was captured using a charge coupled device camera and was expressed as coordinates on a graph. Movements of the eye and dot were superimposed on a graph and analyzed. Minimum visualized dot diameters were compared to the Teller visual acuity. Results: Ten eyes (8.9%) of six children failed to perform the Teller visual acuity test, and two eyes (1.8%) of one patient failed to perform the SNU visual acuity test. The observed Teller visual acuity and SNU visual acuity were significantly correlated (p <0.001). Visual angle degrees converted from the Teller visual acuity and SNU visual acuity were also significantly correlated (p < 0.001). Conclusion: The SNU visual acuity using moving targets correlated well with Teller visual acuity and was more applicable than the Teller acuity test. Therefore, the SNU visual acuity test has potential clinical applications for children.
Abstract
Purpose: To investigate the efficacy of a computerized visual acuity test, the SNU visual acuity test for children. Methods: Fifty-six children, ranging from 1 to 5 years of age, were included. In a dark room, children gazed at and followed a circular dot with 50% contrast moving at a fixed velocity of 10 pixels/sec on a computer monitor. Eye movement was captured using a charge coupled device camera and was expressed as coordinates on a graph. Movements of the eye and dot were superimposed on a graph and analyzed. Minimum visualized dot diameters were compared to the Teller visual acuity. Results: Ten eyes (8.9%) of six children failed to perform the Teller visual acuity test, and two eyes (1.8%) of one patient failed to perform the SNU visual acuity test. The observed Teller visual acuity and SNU visual acuity were significantly correlated (p <0.001). Visual angle degrees converted from the Teller visual acuity and SNU visual acuity were also significantly correlated (p < 0.001). Conclusion: The SNU visual acuity using moving targets correlated well with Teller visual acuity and was more applicable than the Teller acuity test. Therefore, the SNU visual acuity test has potential clinical applications for children.
참고문헌 (17)
- Lamkin JC, "Can this baby see? Estimation of visual acuity in the preverbal child", Int Ophthalmol Clin, 32, pp.1~23 (1992)
- Dobson V, "Acuity card assessment of visual function in the cryotherapy for retinopathy of prematurity trial", Invest Ophthalmol Vis Sci, 31, pp.1702~1708 (1990)
- McDonald MA, "Assessment of visual acuity in toddlers", Surv Ophthalmol, 31, pp.189~210 (1986)
- Dobson V, "The acuity card procedure : interobserver agreement in infants with perinatal complications", Clin Vis Sci, 6, pp.39~48 (1990)
- Dobson V, "Prototype and Teller acuity cards yield similar acuities in infants and young children despite stimulus differences", Clin Vis Sci, 8, pp.395~400 (1993)
- Hutchinson TE, "Humancomputer interaction using eye-gaze input", IEEE Trans Syst Man Cybern, 19, pp.1527~1534 (1989)
- Riggs LA., "Visual acuity, In Vision and visual perception", pp.321~349 (1965), John Wiley & Sons
- Kushner BJ, "Grating visual acuity with Teller cards compared with Snellen visual acuity in literate patients", Arch Ophthalmol, 113, pp.485~493 (1995)
- Hoyt CS, "Cryotherapy for retinopathy of prematurity : 3 1", 2-year outcome for both structure and function, 1993, pp.111, 319~320
- Spierer A, "Vision screening of preverbal children with Teller acuity cards", Ophthalmology, 106, pp.849~854 (1999)
- Park MG, "specificity and efficiency of Teller acuity cards for detecting amblyopia", J Korean Ophthalmol Soc, 31, pp.697~701 (1990)
- Graham CH., "Perception of movement, In Vision and visual perception", pp.575~588 (1965), John Wiley & Sons
- Ho CS, "Abnormal spatial selection and tracking in children with amblyopia", Vision Res, 46, pp.3274~3283 (2006)
- Kiorpes L, "Sensitivity to visual motion in amblyopic macaque monkeys", Vis Neurosci, 23, pp.247~256 (2006)
- Kirschen DG, "The dot visual acuity test : a new acuity test for children", J Am Optom Assoc, 54, pp.1055~1059 (1983)
- Vuong QC, "An advantage for detecting dynamic targets in natural scenes", J Vis, 6, pp.87~96 (2006)
- Thornton IM, "A matching advantage for dynamic human faces", Perception, 31, pp.113~132 (2002)