COA Ophthalmic Instruments and Procedures

Question 1

What instrument is used to measure the curvature of the anterior corneal surface?

Accepted Answer

Keratometer

Answer

Tonometer

Answer

Retinoscope

Answer

Ophthalmoscope

Question 2

The slit lamp biomicroscope is primarily used to examine which ocular structures?

Accepted Answer

Anterior and posterior segments of the eye

Answer

Only the retina

Answer

Only the optic nerve

Answer

Only the corneal surface

Question 3

What is the primary purpose of performing retinoscopy?

Accepted Answer

Determine refractive error objectively

Answer

Measure intraocular pressure

Answer

Photograph the fundus

Answer

Measure corneal thickness

Question 4

Which instrument provides a wide-field inverted view of the fundus?

Accepted Answer

Binocular indirect ophthalmoscope

Answer

Direct ophthalmoscope

Answer

Slit lamp alone

Answer

Autorefractor

Question 5

A lensometer (lensmeter) is used to measure which of the following?

Accepted Answer

Prescription power of spectacle lenses

Answer

Corneal curvature

Answer

Intraocular pressure

Answer

Pupil diameter

Question 6

A-scan ultrasound biometry is primarily performed to measure:

Accepted Answer

Axial length of the eye

Answer

Corneal curvature

Answer

Anterior chamber depth only

Answer

Retinal thickness