title: The Correlation of Age and Postoperative Visual Acuity for Age-Related Cataract.
abstract: OBJECTIVE
  Clinically, what is the best time for age-related cataract (ARC) patients to receive surgeries and get the most benefits is important. We explored the relationship between age and presenting postoperative visual acuity (POVA) in patients from rural China.
  
  
  METHODS
  Three Lifeline Express Hospital Eye-Train missions of Peking University People's Hospital were chosen. At the first day after surgery, 3452 ARC eyes with the presenting POVA ≥ 6/60 were enrolled. The relationship between age and POVA was analyzed statistically.
  
  
  RESULTS
  In these three missions, there were more female patients than males; the ratio of females to males was 1.71. The average age of females was older than males. Overall, the percentages of patients with good visual outcomes (≥6/18) were significantly decreased with aging. Different regions had variations, but the trends were the same. There was weak linear correlation between age and POVA. The correlations of females were stronger than males in Yuncheng and Sanmenxia and weaker than males in Zhoukou.
  
  
  CONCLUSIONS
  The good visual outcomes of presenting POVA were significantly decreased with aging and there were weak linear correlations between age and POVA in rural China. The linear correlation might be influenced by the difference of gender and region.
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital and Key Laboratory of Vision Loss and Restoration, Ministry of Education and Beijing Key Laboratory for the Diagnosis and Treatment of Retinal and Choroid Diseases, Beijing 100044, China; Department of Ophthalmology, Peking University International Hospital, Beijing 102206, China; People Eye Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing 100044, China.
authors.forename: Xiaochun
authors.initials: X
authors.lastname: Li
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital and Key Laboratory of Vision Loss and Restoration, Ministry of Education and Beijing Key Laboratory for the Diagnosis and Treatment of Retinal and Choroid Diseases, Beijing 100044, China; People Eye Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing 100044, China.
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Cao
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital and Key Laboratory of Vision Loss and Restoration, Ministry of Education and Beijing Key Laboratory for the Diagnosis and Treatment of Retinal and Choroid Diseases, Beijing 100044, China; People Eye Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing 100044, China.
authors.forename: Xianru
authors.initials: X
authors.lastname: Hou
authors.affiliation: Department of Ophthalmology, Peking University People's Hospital and Key Laboratory of Vision Loss and Restoration, Ministry of Education and Beijing Key Laboratory for the Diagnosis and Treatment of Retinal and Choroid Diseases, Beijing 100044, China; People Eye Center, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing 100044, China.
authors.forename: Yongzhen
authors.initials: Y
authors.lastname: Bao
mesh_terms: D000367:Age Factors; D000368:Aged; D002386:Cataract / Q000473:pathology*; D002387:Cataract Extraction; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011184:Postoperative Period; D012727:Sex Characteristics; D014792:Visual Acuity