Izvorni znanstveni članak
Changes in the Interpupillary Distance (IPD) with Ages and Its Effect on the Near Convergence/ Distance (NC/D) Ratio
Tatjana Filipović
Sažetak
This study aims at determining the mean value of the ophthalmic anthropometrics
parametar-IPD (Interpupillary distance) and the mean value of NC/D (Near convergence/
distance) in 300 subjects aged 5 to 60 years. The influence of IPD on the NC/D ratio
in the same subjects will also be investigated. The investigation showed that the
mean value of IPD is 60.5±2.4 cm, and the mean value of NC/D ratio is 4.95±2.28 prD.
Mean IPD of 5.1 cm in 5-year old children increases to 6.3 cm in adult over 20. In adulthood,
IPD remains the same, i.e. 6.3 cm. Our study showed that the NC/D ratio is stable
during lifetime. Since NC/D is stabile and IPD changes during lifetime, it is evident
that factors other than IPD, such as convergence and accommodation, influence the stability
of the NC/D ratio.
Ključne riječi
interpupillary distance; NC/D ratio
Hrčak ID:
28167
URI
Datum izdavanja:
15.12.2003.
Posjeta: 5.236 *