Martial arts

Martial arts

Any of several Asian arts of combat or self-defense that are usually practiced as sports.

0Categories 100Terms

Add a new term

Contributors in Martial arts

Become a Contributors

Martial arts >

Astigmatic effect

Eyewear; Optometry

Collective description of the cylindrical power and the cylinder axis.

Distance optical centre

Eyewear; Optometry

Optical centre of the distance portion.

Reference seeing distance

Eyewear; Optometry

Agreed distance of 250 mm between the object side (first) nodal point of the eye and the object observed. The reference seeing distance is used, above all, as a reference ...

Intraocular pressure

Eyewear; Optometry

Eye pressure, as determined by the amount of aqueous humour filling it. High IOP (ocular hypertension) can be a sign of glaucoma

Inset

Eyewear; Optometry

Displacement of a multifocal segment from the distance reference point towards the nose, usually whithout reference to the effect on the near optical centres.