• An In-Person-Only Event
  • Technical Conference:  07 – 12 May 2023
  • The CLEO Hub: 09 – 11 May 2023


Registration Types and Rates

Full Conference 

Access to all content including the Plenary Sessions, Technical Sessions, Postdeadline Papers Session, Poster Sessions, Symposia and Special Events. Also includes access to the Exhibition, online Technical Digest Papers and Postdeadline Papers.

*All presenters must register by 23:59 EDT (UTC-04:00), on Friday, 28 April 2023.

  Early Rate Standard Rate Late Rate
  Before or On 28 February 2023 01 March - 11 April 2023 12 April - 12 May 2023
Member USD 708 USD 741 USD 887
Non Member USD 1,055 USD 1,106 USD 1,330
Student Member USD 311 USD 326 USD 394
Student Non Member          USD 449 USD 471 USD 550
Exhibitor Upgrade USD 708

USD 741

USD 887


Exhibits Pass Plus

Access to the Plenary Sessions and the Exhibition (includes Theater Programming and Poster Sessions).

Exhibits Pass Plus FREE
Exhibitor Booth Personnel FREE


Short Courses

Each Short Course offers a unique learning opportunity with focused instruction in real-time. Short Course registration includes accompanying Short Course Notes.

*All presenters must register by 23:59 EDT (UTC-04:00), on Friday, 28 April 2023.

  Standard Rate Late Rate
  Before or On 11 April 2023 After 11 April 2023
Half-Day Member USD 305 USD 375
Half-Day Non Member USD 385 USD 445
Half-Day Student Member USD 140 USD 150
Half-Day Student Non Member USD 140 USD 150

Important Information

Early and Standard Registration Deadlines

Payment MUST be received with your registration form or with your online registration; NO Registration will be processed without payment. All payments must be in US Dollars. Registrations received after 23:59 EDT (UTC-04:00), on Tuesday, 28 February 2023, will be charged the Standard Rate. Registrations received after 23:59 EDT (UTC-04:00), on Tuesday, 11 April 2023, will be charged the Late Rate. Upon receipt of your registration and payment, a confirmation letter will be e-mailed to each registrant. PAYMENT ISSUES WILL DELAY PROCESSING OF YOUR REGISTRATION. Note: All presenters must register by 23:59 EDT (UTC-04:00), on Friday, 28 April 2023.

Health and Safety Requirements

CLEO follows the guidance of The Centers for Disease Control (CDC) as it relates to COVID-19 and other communicable diseases along with local requirements to meet safely. Proof of vaccination may be required. Requirements are subject to change.

Code of Conduct

It is important to the success of this meeting that every attendee be treated with consideration and respect. Please review the Code of Conduct and Anti-Harassment policy.


Only credit card payments are accepted (VISA, Mastercard, American Express, Discover, Diners Club) during online registration.

Payments made by check or wire transfer must be made payable to Optica in US dollars and drawn on a US bank. Payments must accompany your registration form in order to process your registration order. 

Policies and Terms of Registration

Reasonable Event Policies and Terms have been established for CLEO. We encourage you to read these carefully as all registrants to CLEO will be required to agree to these policies and terms as a condition of registration.

Privacy Policy

CLEO and its co-sponsors respect the privacy rights of our visitors and recognize the importance of protecting all information that you may choose to share with us. To further this commitment, we have adopted this Privacy Policy to guide how we collect, store and use the information you provide to us.

Refund and Cancellation Policy

Cancelling a Registration: Refund requests must be received in writing by Tuesday, 18 April 2023. A processing service charge of USD 75 will be assessed. Cancellation requests submitted after Tuesday, 18 April 2023 WILL NOT BE CONSIDERED. Please allow four to six weeks to process a refund request.


c/o MCI USA | Dallas

6100 W Plano Pkwy #3500
Plano, TX  75093