| D007259 |
Infrared Rays |
That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants. |
Heat Waves,Heat Wave,Infrared Ray,Ray, Infrared,Rays, Infrared,Wave, Heat,Waves, Heat |
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| D009885 |
Ophthalmology |
A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases. |
Ocular Surgery,Ocular Surgeries,Surgery, Ocular |
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| D012106 |
Research |
Critical and exhaustive investigation or experimentation, having for its aim the discovery of new facts and their correct interpretation, the revision of accepted conclusions, theories, or laws in the light of newly discovered facts, or the practical application of such new or revised conclusions, theories, or laws. (Webster, 3d ed) |
Research Priorities,Laboratory Research,Research Activities,Research and Development,Activities, Research,Activity, Research,Development and Research,Priorities, Research,Priority, Research,Research Activity,Research Priority,Research, Laboratory |
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| D042262 |
Retinoscopy |
An objective determination of the refractive state of the eye (NEARSIGHTEDNESS; FARSIGHTEDNESS; ASTIGMATISM). By using a RETINOSCOPE, the amount of correction and the power of lens needed can be determined. |
Shadow Test,Skiametry,Skiascopy,Retinoscopies,Shadow Tests,Skiametries,Skiascopies |
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| D019719 |
Diagnostic Equipment |
Nonexpendable items used in examination. |
Equipment, Diagnostic,Diagnostic Equipments,Equipments, Diagnostic |
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