Advanced Seminar in Strabismus, 2 days + Optional Workshop

Advanced Seminar in Strabismus: Reorganizing Space, Time and the Visual Process 

2-Day Seminar + Optional 3rd Day Interactive Workshop

HYBRID: In-person AND Virtual Participation options!

Seminar: Saturday & Sunday, March 18 & 19, 2023  
+  Optional 3rd day, Interactive Workshop: Monday, March 20, 2023 (for In-Person Seminar Attendees only)


This 2-day advanced seminar on strabismus treatment and management builds upon the binocular treatment principles presented and explored in the recommended pre-requisite course, “Tuning Binocularity: The Art of Facilitating Visual Biofeedback” (recording available for review).  The advanced seminar provides a context to help optometrists and vision therapists relate to the world as seen through the eyes of the patient with strabismus.  It provides systematic guidelines for facilitating binocular fusion in patients with strabismus, and offers an extensive exploration of the diagnostic and therapeutic use of the Slotnick Swirl®, specifically for strabismus rehabilitation.

Optional 1-day Workshop follows, for hands-on application and reinforcement.  Outline and detailed description below.

Slotnick Swirl- Laboratory

  • Seminar:  Hybrid event: Live & Virtual!  Saturday & Sunday, March 18 & 19, 2023,
    9am-6pm Eastern Time. 
    16 hours CE, with 8 hours COPE-pending
  • Workshop (optional 3rd day): Monday, March 20, 2023,
    8:30am-2:30pm.5 hours CE
    • Workshop for In-Person Seminar attendees only
  • On-site Location:  Caledonia, Ontario, CANADA. (near Toronto)
    • Limited to 20 on-site registrants.
  • Recommended Pre-requisite:  Tuning Binocularity: The Art of Facilitating Visual Biofeedback.   
    Available here:


Advanced Seminar, 2-day Course Outline*:

  • Thinking in 4 Dimensions: Advantages of Strabismic Adaptations
  • Strabismus Assessment within the Optometric Examination
    • Case example with interpretations and inferences
  • Visual Projections:  Normal and Anomalous
    • Sensory & Motor Assessment
    • Cover Testing and interpretation in strabismus
    • Posture Campimetry (Brock Posture Board)
    • MIT or Slotnick Swirl® for image projection assessment
  • Diagnostic & Therapeutic use of the MIT or Slotnick Swirl® in Strabismus Assessment
    • Includes when, how and whether to address Anomalous Projection
    • Flow charts presented to guide observations and decision-making in treatment plans.
  • Refractive Sculpting for patients with strabismus
  • Supplementary resources: Patient coaching & Vision therapy activities which support 4-D processing.


Interactive Workshop (optional 3rd day, in-person only):

In-person attendees will have the opportunity to return for a 3rd day of hands-on exploration.

  • Observe the assessment of a patient with strabismus:
    • Cover testing with simultaneous prism presentation
    • Visual projection assessment with the Slotnick Swirl, and exploration of treatment plans.
  • Explore Posture Campimetry technique in small groups with Brock Posture Boards, with supervision.
  • Explore advanced binocular fusion and biofeedback techniques using Slotnick Swirl® therapeutically, in small groups.

Materials recommended for in-person attendees:

  • HTS red/blue filters (cobalt blue!)
  • Horizontal Prism bar
  • Red/green glasses
  • Penlight (with a switch, preferred)


Course Description*

This advanced 2-day seminar builds upon the foundations established in “Tuning Binocularity,” which is strongly recommended as a pre-requisite course (recording available here). The advanced seminar:

  • Explores clinical considerations for analyzing the sensory status of the patient with strabismus.
  • Evaluates optometric findings in a sensory processing context.
  • Helps the clinician establish a prognosis and an effective plan for sensorimotor alignment through strabismus training.
  • Introduces the MIT (or “Slotnick Swirl”) as a diagnostic testing tool in strabismus management.
  • Helps clinicians interpret image projection responses, both normal and anomalous projection.
  • Provides a systematic plan for treatment and management of challenging patients with strabismus:
    • Includes prism compensation and reduction plan.
    • Includes guidance on how to determine of whether anomalous projection is interfering with sensorimotor alignment prognosis,
    • as well as appropriate treatment options for re-establishing normal projection or facilitating alignment in the presence of anomalous projection.
  • Provides recommendations for activities which support processing of visual information over 4 dimensions of space/time.
  • Provides detailed guidelines on how to prescribe lenses to facilitate binocular fusion in patients with strabismus.


The Workshop is offered as an optional 3rd day, applying techniques and assessments presented in the seminar (for in-person participants only). It includes hands-on therapeutic training with the Slotnick Swirl®, and reinforcement of case management choices. In addition, time is spent exploring visual projections and interpretation with the Brock Posture Board, from both doctor and patient perspective.

Case-driven discussion may include prescriptive management, primitive reflexes and syntonics applications along with therapy activities.


* Management strategies presented here begin in the exam room and include prescribing from the therapy room. Therapists interested in attending are strongly encouraged to do so with their optometrists, as partnership will be necessary when implementing these strategies.




            The office of Dr. Lorelei Zeiler                             Live, Virtual Access

                       245 Argyle St S                                   (TBD)

                Caledonia, ON N3W 1K7





Saturday & Sunday: 9 am - 6 pm Eastern Time

  • 9:00 am - 10:45 am  (2 hours)
  • 11:15 am - 1:00 pm   (2 hours)
  • 1:00 pm - 2:00 pm:  Lunch break
  • 2:00 pm - 3:45 pm   (2 hours)
  • 4:15 pm - 6:00 pm   (2 hours)
  • 8 hours Continuing Education / day
    = 16 hrs CE total


Monday: 8:30 am - 2:30 pm ET

  • 8:30 am - 11:00 am  (2.5 hours)
  • 11:00 am - 12:00 pm:  Lunch break
  • 12:00 p - 2:30 pm  (2.5 hours)
  • 5 hrs CE

Lunch included for in-person attendees.



Nearby hotel/motels:

 Super 8 in Mount Hope (10 min from office)
 Courtyard Hamilton (20-25 min from office)

Alternatives (search near Caledonia, Ontario):

  AirBnB (includes B&B's)

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