https://doi.org/10.31288/oftalmolzh201654143

Age-related changes in children’s threshold exposure duration for recognition of test objects

V.I. Serdiuchenko, Dr Sc (Med)

M.B. Zheliznik, Graduate Student

Filatov Institute of Eye Diseases and Tissue Therapy, NAMS of Ukraine

Odessa, Ukraine

E-mail: virais@ukr.net

Background: Timely detection of an object in the visual field is of primary importance to adults and children.

Purpose: To investigate threshold exposure duration for recognition of test objects (TEDRTO) in normal vision children of various age groups.

Materials and Methods: Four hundred and sixteen children (832 eyes; age, 5 to 17 years) with a refraction within the age norm (emmetropia or hyperopia of up to 1.0 D) were included into the study and underwent assessment of TEDRTO with a special electronic apparatus. The apparatus was used to expose a test object (an illuminated Landolt’s ring subtending 8 minutes of arc) against a black background.

Results: In children of 5 to 6 years, 7 to 10 years, 11 to 14 years, and 15 to 16 years, binocular threshold exposure durations for recognition of the white test object subtending 8 minutes of arc were found to be 2.1 ± 1.3 ms, 1.4 ± 0.5 ms, 1.1 ± 0.3 ms and 1.1 ± 0.3 ms, respectively.

Conclusions: The results obtained can be used as reference values while investigating threshold exposure durations for recognition of test objects in various disorders of the visual system.

 

References

1.Kolbanov VV. [Investigation of expositional visual acuity in armored vehicle teams]. Mil Med J. 1969;7:72-3 Russian

2.Kolbanov VV, Medvedev VI. [Dynamic characteristics of visual functions]. Hum Physiol. 1979;4(5):687-93 Russian

3.Serdiuchenko VI. [New dynamic techniques for examination of visual functions in refractive and binocular vision anomalies in children]. [Dr Sc (Med) Dissertation]. Odessa: Filatov Institute of Eye Disease and Tissue Therapy; 1995. 257 p. Ukrainian

4.Baron WS, Westheimer G. Visual acuity as a function of exposure duration. J Opt Soc Am. 1973 Feb;63(2)212-9
Crossref   Pubmed

5.Bokhov B.B., Nosovskii A.M. [The impact of long term isolation on visual acuity]. Aviacosm Ecolog Med. 1997;31(4):41-6

6.Cobb PW. Some experiments on the speed of vision. Trans Illum Eng Soc. 1928; 2(19):150-75

7.Dannenbaum E., Paquet N., Chilingaryan G., Fung J. Clinical evaluation of dynamic visual acuity in subjects with unilateral vestibular hypofunction. Otol. Neurotol. 2009 Apr;30(3):368-72
Crossref   Pubmed

8.Ferry C, Rand G. Intensity of light and speed of vision studied with the special reference to industrial situation. Part 2. Trans Illum Eng Soc. 1928;23:827.

9.Serdiuchenko VI. [Timing parameters of the resolving ability of the eye and their importance for the diagnosis and treatment of strabismus and amblyopia]. Oftalmol Zh. 1994;5:262--5 Russian

10.Serdiuchenko VI, Zheliznik MB. [Threshold exposure duration for recognition of test objects in children with various refractive statuses]. Oftalmol Zh. 2016;3:3-5 Russian
Crossref

11.Kravkov S.V. [The eye and its operation]. Moscow, Leningrad: Publishing House of the Academy of Science of the USSR; 1950. p. 15 Russian