Measurement Error of Ametropia and Scope of Eye Pseudoaccomodation by Images of Light Microspot on the Retina

Authors

  • Ігор Генріхович Чиж Optical department at Instrument Making Faculty NTUU KPI, Ukraine
  • Олександр Олексійович Голембовський NTUU KPI, Ukraine https://orcid.org/0000-0003-1661-3672

DOI:

https://doi.org/10.20535/1810-0546.2016.2.62682

Keywords:

RMS of retinal image of the spot, Amount of pseudoaccommodation of pseudofackic eye

Abstract

Background. The development of new methods and tools for an objective assessment of the volume optical component of pseudofackic eye pseudoaccommodation are done as well as the ways to improve the accuracy of these measurements.

Objective. The reasoning of the measuring possibility of the ametropia value and pseudoaccommodation volume through the reflection of the dependence on the mean square value defocusing (RMS) of the light microspot image radius on the retina was done.

Methods. The mathematical representation of RMS function, which is argumented by value of artificially formed defocused microspot image on the retina. Computer modeling using Mathcad functions RMS distortion of the electric noise.

Results. The quantitative dependence of errors of ametropia definition and scope of pseudoaccommodation on RMS function distortion level is revealed. The possibility of providing the required measurement accuracy in the proposed method is brought.

Conclusion. Existing electronic components allows you to implement a method of the ametropia measuring and pseudoaccommodation volume via RMS playback functions of light microspot on the retina. For the method it is quite achievable to measure these parameters with the error ±0.1 diopter.

Author Biographies

Ігор Генріхович Чиж, Optical department at Instrument Making Faculty NTUU KPI

Igor G. Chyzh, professor at the Optical and Optoelectronic Devices Department

Олександр Олексійович Голембовський, NTUU KPI

Olexandr O. Holembovskyi, postgraduete student at the Optical and Optoelectronic Devices Department

References

N. Sergienko, Ophthalmic Optics. Kyiv, Ukraine: Shupyk National Med. Acad., 2015 (in Russian).

N. Sergienko et al., “The depth of focus pseudo phakic eyes”, Graefe’s Archive for Clinical and Experimental Ophthalmology, no. 11, pp. 1623–1627, 2008.

I. Chizh et al., Aberrometry of the Human Eye Optical System. Kyiv, Ukraine: NTUU KPI, 2013, 290 p. (in Ukrainian).

I. Chizh and O. Holembovskyi, “Technique and device for measuring the human eye’s depth of focus”, Naykovi Visti NTUU KPI, no. 2, pp. 140–146, 2013 (in Ukrainian).

I. Chizh and O. Holembovskyi, “Method of determination of RMS exposure of extended source image by microphotometry”, Naukovi Visti NTUU KPI, no. 1, pp. 140–146, 2016 (in Ukrainian).

S.A. Rodionov, Optical System Design Automation. Leningrad, USSR: Mashinostroenie, 1982 (in Russian).

Downloads

Published

2016-03-16

Issue

No. 2 (2016): Engineering

Section

Art

License

Copyright (c) 2017 NTUU KPI Authors who publish with this journal agree to the following terms:

    1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under CC BY 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

    2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

    3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work