HVID

(redirected from Horizontal Visible Iris Diameter)
AcronymDefinition
HVIDHorizontal Visible Iris Diameter (optometry measurement)
References in periodicals archive ?
Selection of the initial trial lens depends on the appropriate fitting guide for the lens being used, but will usually be around 4mm larger in diameter than the horizontal visible iris diameter (HVID).
A resource has been created to enable practitioners to quickly design its Special Eyes custom-made soft contact lenses for patients with an average corneal diameter, or horizontal visible iris diameter (HVID) of 11.6 to 12.0mm.
* Horizontal visible iris diameter (HVID) --this helps "the process of picking the total diameter (TDD) of the lens
b By measuring the horizontal visible iris diameter of both eyes at every aftercare visit
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