VISION AND BLOOD GROUPING: A POSSIBLE LINK. Jamshed Warsi1 , Khaleeq Ur rehman2 , Benazir Mahar3 , Tazeen Shah4

Abstract

ABSTRACT
BACKGROUND: The ABO blood group was discovered in 1900 century by Austrian, Karl
Landsteiner. Since then, the importance of blood typing could not be denied because of its
possible association with different physiological and pathological conditions of individuals;
hence ABO/Rh blood is linked with various genetic, metabolic, and pathological conditions.
OBJECTIVE: After the discovery of ABO blood group, the escalating importance of blood
grouping cannot be denied in transfusion/ blood banking, Furthermore, recent research studies
revealed that blood group is also associated with many pathologies. The aim of the studies,
hence, is to find out the possible link between visual acuity and blood grouping. METHODS: A
cross sectional (survey based) work was conducted with the sample size (n) of 424 (male and
female). Blood grouping was performed and different charts (Snellen, Tumbling E and Jager)
were used to find out the visual acuity. Total 848 eyes were monitored. RESULTS: According
to Snellen’s chart the highest percentage of abnormal eyes were found in O blood groups (in
male) 44(10.18%) and 79(19.0%) in B blood groups in female. 120(27.78%) males and
199(47.84%) females were Rh+ with abnormal vision. According to Tumbling E chart, the
highest percentage of abnormal eyes were found in O blood groups (in male) 50(11.57%) and
80(19.23%) in B blood groups in female. 127(29.40%) males and 206(49.52%) females were
Rh+ with abnormal vision. According to Jager chart, the highest percentage of abnormal eyes
were found in B blood groups (in male) 27(6.25%) and 37(8.89%) in female. 69(15.97%) males
and 96(23.08%) females were Rh+ with abnormal vision. CONCLUSION: abnormal vision (far
vision) is apparently more in o blood group in male and B blood group in female and B was
associated with near vision in both male and female.