NOCE Contact Lens Fitting and Care 3

Question 1

Which parameter describes how well a contact lens material allows oxygen to pass through to the cornea?

Accepted Answer

Dk/t (oxygen transmissibility)

Answer

Water content percentage

Answer

Base curve radius

Answer

Center thickness

Question 2

A keratoconus patient is best managed with which type of contact lens to achieve optimal visual acuity?

Accepted Answer

Rigid gas permeable (RGP) lens

Answer

Standard soft spherical lens

Answer

Daily disposable soft lens

Answer

Soft toric lens

Question 3

What is the ANSI recommended minimum time for neutralization when using a two-step hydrogen peroxide contact lens disinfection system?

Accepted Answer

6 hours

Answer

30 minutes

Answer

1 hour

Answer

15 minutes

Question 4

Which segment of patients would most benefit from scleral contact lenses?

Accepted Answer

Patients with severe dry eye disease or irregular corneas

Answer

Patients with low myopia and healthy corneas

Answer

Presbyopic patients wanting reading correction only

Answer

Patients who prefer daily disposable lenses

Question 5

When converting a spectacle prescription of −3.00 DS to a contact lens power, which factor must be considered for prescriptions exceeding ±4.00 D?

Accepted Answer

Vertex distance compensation

Answer

Pupillary distance

Answer

Pantoscopic tilt

Answer

Frame wrap angle

Question 6

A patient develops a red, painful eye with a corneal infiltrate after sleeping in monthly replacement soft contact lenses. What is the most likely diagnosis?

Accepted Answer

Microbial keratitis

Answer

Giant papillary conjunctivitis

Answer

Contact lens-induced acute red eye (CLARE)

Answer

Superficial punctate keratitis