Shanghai High Myopia Study

Condition(s) studied

Investigational drug(s) / intervention(s)

Cataract: The genetic and environmental factors concerning to the pathogenesis of cataract in the three groups.

Study summary

The purpose of this study is to evaluate the long-term visual outcome of the cataract surgery using a large-scale and comprehensive database of high myopic cataract and age-related cataract patients. The investigators will further investigate into the various genetic and environmental factors that may contribute to the pathogenesis of high myopic cataract.

Eligibility

Primary outcome measure(s)

• Differences in the clinical phenotypes and visual outcomes of high myopic cataract patients — Follow-up until five years after surgery
  Cataract type and severity of high myopic cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements.
• Differences in the clinical phenotypes and visual outcomes of age-related cataract patients — Follow-up until five years after surgery
  Cataract type and severity of age-related cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements.
• Differences in the clinical phenotypes and visual outcomes of ametropic cataract patients — Follow-up until five years after surgery
  Cataract type and severity of ametropic cataract patients are evaluated using LOCSIII grading system. Visual outcomes are also evaluated including visual acuity with or without correction, intraocular pressure, fundus function, contrast sensitivity and other visual outcome measurements.

Trial sites (1)

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