World Optometry Day quiz

What is the unit of refractive power of a lens?

• Meter

• Diopter

• Candela

• Hertz

Which type of lens is used to correct hypermetropia?

• Concave

• Convex

• Cylindrical

• Plano

What does Snell's Law describe?

• The reflection of light

• The bending of light at an interface

• The dispersion of light

• The absorption of light

What is the far point of a myopic eye with a refractive error of -3.00D?

• Infinity

• 50 cm

• 33 cm

• 25 cm

Which layer of the cornea is responsible for maintaining corneal transparency?

• Stroma

• Endothelium

• Epithelium

• Descemet's membrane

What is the average axial length of an adult human eye?

• 18 mm

• 22 mm

• 24 mm

• 26 mm

Which cranial nerve controls pupillary constriction?

• Optic nerve (CN II)

• Oculomotor nerve (CN III)

• Trochlear nerve (CN IV)

• Abducens nerve (CN VI)

Which structure in the eye is responsible for aqueous humor production?

• Retina

• Ciliary body

• Cornea

• Choroid

What is the normal intraocular pressure (IOP) range in mmHg?

• 5-10

• 10-21

• 15-25

• 20-30

What is the name of the chart commonly used to test near vision in India?

• Snellen chart

• Jaeger chart

• LogMAR chart

• Pelli-Robson chart