skip to navigation

Optics, Refraction, and Instruments (Part B)


The Optics, Refraction, and Instruments exam is frequently taken early in residency training.

The Examination is presented in a booklet and consists of 60 Single Best Answer questions

The Optics, Refraction, and Instruments Examination takes one-and-a-half hours. Each question consists of four Single Best Answer options, with one correct answer.

The candidates enter their answers on response sheets which are computer marked. A positive mark is awarded for each correct answer. No mark is given to those questions marked incorrectly or left blank. The results are analysed by the examinations committee which has members from several countries.

Answering all the questions accurately is the best way of obtaining a pass grade but because accuracy of answers is very important and takes time is still possible to pass the examination without completing all questions.

Candidates and co-ordinators are informed of the results of the individual sections into which the test is divided.


  • Optics
  • Refraction and Instruments
  • Instruments used in Ophthalmology


As this is a secure International Exam it takes time for all the papers to be returned for scoring so the results are not produced immediately.

Results of the ICO Optics, Refraction, and Instruments will be mailed to candidates in June.

For candidates who enroll direct with the Examination Office, detailed results are sent by air mail to their home addresses, as given on the application forms.

For candidates who are part of a group booking from a co-ordinator the result envelops are sent by courier in a package direct to the Co-ordinator for distribution.


A candidate will be given a signed certificate indicating where he/she has

  • passed with Distinction
  • passed with Merit
  • passed

Stay connected:         Follow us on Instagram

Web site design and web development by D3 Solutions