Sleep and subjective happiness between the ages 40 and 59 in relation to presbyopia and dry eye

• Kazuno Negishi ,

  Contributed equally to this work with: Kazuno Negishi, Masahiko Ayaki

  Roles Conceptualization, Funding acquisition, Investigation, Methodology, Project administration, Supervision, Writing – review & editing

  * E-mail: mayaki@olive.ocn.ne.jp (MA); kazunonegishi@keio.jp (KN)

  Affiliation Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Masahiko Ayaki ,

  Contributed equally to this work with: Kazuno Negishi, Masahiko Ayaki

  Roles Conceptualization, Data curation, Formal analysis, Writing – original draft, Writing – review & editing

  * E-mail: mayaki@olive.ocn.ne.jp (MA); kazunonegishi@keio.jp (KN)

  Affiliations Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan, Otake Clinic Moon View Eye Center, Kanagawa, Japan

  https://orcid.org/0000-0002-9481-0164

  ⨯
• Motoko Kawashima,

  Roles Conceptualization, Data curation, Writing – review & editing

  Affiliation Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan

  ⨯
• Kazuo Tsubota

  Roles Supervision, Writing – review & editing

  Affiliations Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan, Tsubota Laboratory, Inc., Tokyo, Japan

  https://orcid.org/0000-0002-8874-7111

  ⨯