4- REFRACTIVE ERRORS

What is the primary characteristic of hyperopia?

• Images focus in front of the retina

• Light rays focus behind the retina

• Unequal curvature of the cornea

• Loss of lens elasticity

Which condition is commonly known as near-sightedness?

• Presbyopia

• Astigmatism

• Hyperopia

• Myopia

At what age does presbyopia typically begin to develop?

• 30 years old

• 35 years old

• 45 years old

• 40 years old

What is the primary cause of astigmatism?

• Elongated eyeball

• Short eyeball

• Unequal corneal curvature

• Lens inelasticity

Which diagnostic test uses a chart to measure visual acuity?

• Retinoscopic examination

• Snellen's chart

• Keratometry

• Cycloplegic testing

In myopia, where do light rays focus relative to the retina?

• Behind the retina

• Directly on the retina

• At multiple points

• In front of the retina

Which surgical procedure uses laser technology to reshape the cornea?

• Radial keratotomy

• LASIK

• PRK

• Corneal transplant

What is a potential complication of contact lens use?

• Broken lenses

• Vision distortion

• Keratitis

• Color blindness

How do hyperopic patients typically hold reading materials?

• Close to their eyes

• At eye level

• Below eye level

• Farther from their eyes

What type of lens is used to correct myopia?

• Bifocal lens

• Progressive lens

• Convex lens

• Concave lens