A new optotype and chart for precision visometry
https://doi.org/10.21516/2072-0076-2019-12-4-8-12
Abstract
Purpose. To develop a new optotype and a chart for precision visometric tests and assess their accuracy.
Materials and methods. 56 patients aged 16 to 57 years with the maximum visual acuity (VA) of 1.0 or more were examined for VA using three types of optotypes: standard letter optotype based on the Sivtsev — Golovin table, Landolt rings, and a new optotype developed by the authors.
Results. On the basis of the psychometric analysis, the corresponding curves were drawn. When using the new optotype, the share of correct answers for VA = 1.0 was 75 %, for VA = 1.5 — 25 %, and for VA = 2.0 — 10 %. In contrast, Landolt rings and Sivtsev — Golovin optotypes gave the following results, respectively: VA = 1.0 — 50 %, 1.5 — 20 %, 2.0 — 10 % and VA = 1.0 — 45 %, VA = 1.5 — 15 %, VA = 2.0 — 5 %.
Conclusion. The proposed optotype and the table for visometric tests, based on the principle of logarithmic progression of optotype sizes, significantly increase the accuracy of VA assessment. An extended range of optotype sizes increases the sensitivity of the visometry.
About the Authors
A-G. D. Aliev
Chair of ophthalmology, Daghestan State Medical University
Russian Federation
Russian Federation
Dr. of Med. Sci., Professor, Head of Chair of Ophthalmology № 1
1, Ploshchad Lenina, Makhachkala, 367000, Russia
A. A-G. Aliev
Daghestan Center of Eye microsurgery
Russian Federation
Russian Federation
Cand. of Med. Sci., deputy director for science
12, Naberezhnaya St., Kaspiysk, 368300, Russia
M. M. Nurudinov
Daghestan Center of Eye microsurgery
Russian Federation
Russian Federation
ophthalmologist, department of vitreoretinal surgery and new technologies
12, Naberezhnaya St., Kaspiysk, 368300, Russia
References
1. Волков В.В., Горбань А.Н., Джалиашвили О.А. Клиническая визо- и рефрактометрия. Ленинград: Медицина; 1976. Volkov V.V., Gorban' A.N., Dzhaliashvili O.A. Clinical vision and refractometry. Leningrad: Meditsina; 1976 (in Russian).
2. Daza de Valdes B. The use of eye glasses. 1623. In: Runge P.E., ed. History of Ophthalmology. Wayenborgh, Belgium. 2004; 11.
3. Jurin J. An essay on distinct and indistinct vision. In: A complete system of optics in four books, viz. a popular, a mathematical, a mechanical, and a philosophical treatise. Cambridge: Published by the author; 1738: 115–71.
4. Лещенко И.А. О системах и правилах определения остроты зрения. Вестник оптометрии. 2009; 3: 54–8. Leshchenko I.A. On systems and rules for the determination of visual acuity. Vestnik optometrii. 2009; 3: 54–8 (in Russian).
5. Donders F.C. On the anomalies of accommodation and refraction. London: New Sydenham Society; 1864.
6. Colenbrander A. The historical evolution of visual acuity measurement. Vis. Impair. Res. 2008; 10: 57–66. https://doi.org/10.1080/13882350802632401
7. Snellen H. Letterproeven tot Bepaling der Gezictsscherpte. Utrecht, Weyers; 1867 (Dutch edition).
8. Воронцов Е.А., Черноусов А.С. Классификация методов и средств определения остроты зрения. Научно-технический вестник информационных технологий, механики и оптики. 2006; 28: 75–83. Vorontsov E.A., Chernousov A.S. Classification of methods and means for determining visual acuity. Nauchno-tekhnicheskiy vestnik informatsionnykh tekhnologiy, mekhaniki i optiki. 2006; 28: 75–83 (in Russian).
9. Landolt E. Bestimmung der Sehschärfe. In: Die Functionsprüfungen des Auges. Graefe-Saemisch Handbuch, 2nd edition; Leipzig; 1904.
10. Bennett A.G. Ophthalmic test types. Br. J. Physiol. Optics.1965; 22: 238–71.
11. Sloan L.L. New test charts for the measurement of visual acuity at far and near distances. Am. J. Ophthalmol. 1959; 48: 807–13.
12. Ferree C., Rand G. More nearly absolute method of testing and rating vision. Arch. Ophthalmol.1940; 24 (2): 292–315.
13. Jonkers G.H. A new optotype chart. Ophthalmologica. 1975; 171: 380–1. https://doi.org/10.1159/000307553
14. Ferris F.L., Kassov A., Bresnick G.H., Bailey I.L. New visual acuity charts for clinical research. Am. J. Ophthalmol. 1982; 94: 91–6.
15. Taylor H.R. Applying new design principles to the construction of an Illiterate E chart. Am. J. Optom. Physiol. Optics.1978; 55: 348–51.
16. Ferree C., Rand G. The testing of visual acuity. Factors in the sensitive use of the test for the detection of errors of refraction. Am. J. Optom. 1934; 17 (1 Jan.): 29–36. https://doi.org/10.1016/S0002-9394(34)92090-0
17. Вейнберг В.Б., Никольская Н.А. Таблицы для измерения остроты зрения. Проблемы физиологической оптики, изд.8. Москва: Издательство АН СССР; 1951: 329–52. Vejnberg V.B., Nikol'skaja N.A. Tables for determining visual acuity. Problemy fiziologicheskoj optiki, izd. 8. Moscow: Izdatel'stvo AN SSSR; 1951: 329–52 (in Russian).
18. Westheimer G. Optotype recognition under degradation: comparison of size, contrast, blur, noise and contour perturbation effects. Clin. Exp. Optom. 2016; 99: 66–72. doi: 10.1111/cxo.12293
19. Алиев А-Г.Д., Исмаилов М.И. Исследование феномена псевдоаккомодации при интраокулярной коррекции афакии. Офтальмохирургия. 1999; 4: 38–42. Aliev A-G.D., Ismailov M.I. Investigation of the phenomenon of pseudo-accommodation for intraocular correction of aphakia. Oftal'mokhirurgiya. 1999; 4: 38–42 (in Russian).
20. Sergienko N.M., Aliyev A-H.D. Correcting astigmatism. Optom. Vis. Sci. 1989; 66 (3): 167–9.
21. Monoyer F. Echelle typographique décimale pour mesurer l'acuit visuelle. Gaz. Med. Paris.1875; 21: 258.
22. Bailey I.L., Lovie J.E. New design principles for visual acuity letter charts. Am. J. Optom. Physiol. Opt.1976; 53: 740.
23. Проскурина О.В., Розенблюм Ю.З., Бершанский М.И. Таблица для исследования остроты зрения у детей. Вестник офтальмологии. 1998; 3: 43–5. Proskurina O.V., Rozenblum Yu.Z., Bershanskiy M.I. Сhart for the study of visual acuity in children. Vestnik oftal'mologii. 1998; 3: 43–5 (in Russian).
24. Alexander K., Xie W., Derlacki D. Visual acuity and contrast sensitivity for individual sloan letters. Vision Res. 1997; 37 (6 Mar.): 813–9. https://doi.org/10.1016/S0042-6989(96)00190-3
25. Tokutake T., Mita N., Kawamoto K.-I., et al. Relation between visual acuity and slope of psychometric function in young adults. i-Perception. 2011; 2: 308–8. doi: 10.1068/ic308
26. Simpson T. Vision thresholds from psychometric analyses: alternatives to Probit analysis. Optom. Vis. Sci. 1995; 72: 371–7. doi:10.1097/00006324-199506000-00004
27. Schulze-Bonsel K., Feltgen N., Burau H., Hansen L., Bach M. Visual acuities “hand motion” and “counting fingers” can be quantified with the freiburg visual acuity test. Invest. Ophthalmol. Vis. Sci. 2006; 47 (3 Mar.): 1236–40. doi:10.1167/iovs.05-0981
Review
For citations:
Aliev A.D., Aliev A.A., Nurudinov M.M. A new optotype and chart for precision visometry. Russian Ophthalmological Journal. 2019;12(4):8-12. (In Russ.) https://doi.org/10.21516/2072-0076-2019-12-4-8-12
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