Instrument Myopia—Microscopy*

@article{Richards1976InstrumentM,
  title={Instrument Myopia—Microscopy*},
  author={Oscar W. Richards},
  journal={Optometry and Vision Science},
  year={1976},
  volume={53},
  pages={658–663}
}
  • O. W. Richards
  • Published 1 October 1976
  • Medicine
  • Optometry and Vision Science
&NA; Looking through optical instruments stimulates the eye to accommodate more than would be necessary for naked eye viewing; this increased near power is called instrument myopia. The amount (up to ‐5 diopters) varies with the observer and the conditions of viewing. Using microscopes produces ‐1.5 to ‐2 diopters of instrument myopia. More instrument myopia is found with low‐power magnification, inexperienced users, and when focusing from minus blur to sharp image. Physiologically, the… 
Objective real-time measurement of instrument myopia in microscopists under different viewing conditions
TLDR
Instrument myopia was measured under different viewing conditions and microscope settings and other factors may play more of a role in determining the degree of instrument myopia during microscopy than the task variables altered here.
Relationship among accommodation, focus, and resolution with optical instruments.
  • J. C. Kotulak, S. E. Morse
  • Computer Science, Medicine
    Journal of the Optical Society of America. A, Optics, image science, and vision
  • 1994
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The amount of accommodation measured during instrument viewing was found to be dependent on instrument design features that modulate the bias of accommodation for the dark focus, which is consistent with the dark-focus-bias theory of accommodation.
Instrument myopia conceptions, misconceptions, and influencing factors
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The literature on instrument myopia is reviewed, with the review organized around three principal objectives to discuss the intermediate resting state conception of accommodation, its application tostrument myopia, and its strengths and weaknesses as applied to the available literature.
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Many theories have been suggested to explain independently the induced myopias — night myopia, empty field myopia, instrument myopia and small pupil myopia. Results of recent research have not
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Five optometric tests for binocular vision and one for stereopsis revealed no significant correlation with the positions of the images, and the relations of these image positions with possible rest equilibrium positions ofThe accommodative mechanism of the eye and optical design of binocular instruments are discussed.
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Abstract : The level of accommodation during instrument viewing is influenced by the perceived nearness of the object in subjects with proximal, but not distal, dark focuses. Instrument myopia,
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People who work in occupations that involve intensive near work are thought to have a higher chance of developing myopia than other people. For example, microscopists in the United Kingdom have a
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Bausch and Lomb's IVEX system, a computerized subjective refractor, was evaluated, A modified Optometric Extension Program (OEP) twenty-one point examination was performed three times on each of
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