"monovision" meaning in English

{
  "etymology_templates": [
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        "1": "en",
        "2": "mono",
        "3": "vision"
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      "expansion": "mono- + vision",
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    }
  ],
  "etymology_text": "From mono- + vision.",
  "head_templates": [
    {
      "args": {
        "1": "-"
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      "expansion": "monovision (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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        {
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          "name": "English terms prefixed with mono-",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
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          "parents": [],
          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Ophthalmology",
          "orig": "en:Ophthalmology",
          "parents": [
            "Medicine",
            "Vision",
            "Biology",
            "Healthcare",
            "Senses",
            "Sciences",
            "Health",
            "Perception",
            "All topics",
            "Body",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "a monovision effect"
        },
        {
          "ref": "2009 January 1, Camille Sweeney, “To Squint or to See the Light”, in New York Times:",
          "text": "Until recently, there wasn't much more one could do than to succumb to a pair of reading glasses, or try to correct the problem with either monovision contact lenses (one eye is corrected for distance, one for up close) or laser surgery .",
          "type": "quote"
        }
      ],
      "glosses": [
        "A treatment for presbyopia in which one eye is treated to improve distance vision and the other eye is treated to improve close-up vision"
      ],
      "id": "en-monovision-en-noun-E023JAiK",
      "links": [
        [
          "ophthalmology",
          "ophthalmology"
        ],
        [
          "presbyopia",
          "presbyopia"
        ]
      ],
      "raw_glosses": [
        "(ophthalmology) A treatment for presbyopia in which one eye is treated to improve distance vision and the other eye is treated to improve close-up vision"
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "medicine",
        "ophthalmology",
        "sciences"
      ]
    }
  ],
  "word": "monovision"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "mono",
        "3": "vision"
      },
      "expansion": "mono- + vision",
      "name": "prefix"
    }
  ],
  "etymology_text": "From mono- + vision.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "monovision (uncountable)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Ophthalmology"
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      "examples": [
        {
          "text": "a monovision effect"
        },
        {
          "ref": "2009 January 1, Camille Sweeney, “To Squint or to See the Light”, in New York Times:",
          "text": "Until recently, there wasn't much more one could do than to succumb to a pair of reading glasses, or try to correct the problem with either monovision contact lenses (one eye is corrected for distance, one for up close) or laser surgery .",
          "type": "quote"
        }
      ],
      "glosses": [
        "A treatment for presbyopia in which one eye is treated to improve distance vision and the other eye is treated to improve close-up vision"
      ],
      "links": [
        [
          "ophthalmology",
          "ophthalmology"
        ],
        [
          "presbyopia",
          "presbyopia"
        ]
      ],
      "raw_glosses": [
        "(ophthalmology) A treatment for presbyopia in which one eye is treated to improve distance vision and the other eye is treated to improve close-up vision"
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "medicine",
        "ophthalmology",
        "sciences"
      ]
    }
  ],
  "word": "monovision"
}