Official statistics and blindness in Hong Kong

Area of Science:

• Ophthalmology
• Public Health
• Epidemiology

Background:

• The World Health Organization (WHO) designated 1976 as the Year of the Prevention of Blindness.
• Previous data indicated a high prevalence of blindness in Hong Kong (1392 per 100,000) and suggested Vitamin A deficiency as a significant cause.

Purpose of the Study:

• To analyze official statistics on blindness in Hong Kong over the past two decades.
• To propose an appropriate prevalence rate for blindness in Hong Kong.
• To illustrate the evolving patterns of blindness causes in Hong Kong.

Main Methods:

• Comprehensive review of official blindness statistics published in Hong Kong.
• Analysis of prevalence rates and etiological factors over a 20-year period.

Main Results:

• Identified trends in blindness prevalence and changing etiological factors in Hong Kong.
• Highlighted the need for updated statistical definitions and classifications.

Conclusions:

• Hong Kong should adopt internationally accepted statistical definitions and classifications for blindness.
• Future statistical reporting should avoid the inclusion of past events to prevent misleading data.