Robin Lewis
Dr. Lewis has been in private practice for 46 years and is co-owner and managing partner of Family Optometry. He received his bachelors degree from Pacific University and his optometry degree from Pacific University College of Optometry in 1981.
Dr Lewis has been a lifelong educator, his newest endeavor is with Reinventing Optometry, please visit to learn more. He has paired up with Dr. Paul Harris, Caroline Hurst, and Jes Felix to offer courses.
Dr. Lewis has traveled, on numerous occasions, to provide vision services for those in need in Mexico. He has served as an expert advisor developing police vision requirements in Oregon, California, and New Mexico. He has been heavily involved in education and community mental health. He has served as an officer for local service clubs, and as a member of advisory boards for Mesa School District; the largest district in Arizona. Dr. Lewis also served as a board member of Tricity Community Behavioral Services, a not-for-profit corporation serving mental health needs, for 14 years; serving as Chairman of the Board from 1994-1996.
Dr. Lewis was twice president of his local optometric society, is past director of the Sun Valley Behavioral Vision Conference, and currently serves as adjunct professor for Pacific University College of Optometry. He is a charter member of The Neuro-Optometric Rehabilitation Association.
He was a founding board member and instructor for the Baltimore Academy of Behavioral Optometry and is now an instructor for the Clinical Curriculum of OEPF. Dr. Lewis served for over 15 years as the state director for the Optometric Extension Program Foundation and now serves as the President of the OEPF. He is the author of "A Behavioral Approach to Vergence Problems", "VT Scholarship Programs", and “Remediation of Strabismus and Amblyopia in the Preschool Child” published by the Optometric Extension Program Foundation. He is a founding member of the OPSIS Education Foundation.
2026-04-17
- DOUBLE VISION
- Plennary Hall
Rob Lewis Understanding and dealing with diplopia in the context of developmental strabismus There are significant concerns among the visual care community about the possibility of developin...
Rob Lewis
Understanding and dealing with diplopia in the context of developmental strabismus
There are significant concerns among the visual care community about the possibility of developing permanent or persistent double vision following interventions for strabismus. The discussion will include an explanation of persistent misunderstandings about visual development, the nature of diplopia and the organization of the visual field that lead to persistent concerns about diplopia in the treatment of strabismus. This presentation will discuss why diplopia is sometimes encountered following surgery for strabismus, why diplopia need not be a permanent outcome, and will discuss the management and elimination of diplopia, when present, through a combination of lenses and Visual Therapy. Selected visual therapy techniques will be demonstrated in the workshops.
Vassilis Kokotas
Re-aligning vision: Working behind the scenes to treat diplopia
The presentation will focus on the reasoning for diplopia management during a Vision Training program. Diplopia is often faced with fear as a symptom but it can be used also as a feedback mechanism for recalibrating binocularity and increasing awareness. As therapists we can reframe and alter the conditions under which our patients' experiences will guide them to a therapeutic result. Optical, perceptual and communication parameters will be discussed in order to provide the necessary background for providing successful treatment and setting the basis for what will be presented during the workshops.
Paul Harris and Matt Mathews
The Clinical Evaluation and Management of Patients Who Present with Diplopia
Dr. Harris will present a protocol for assessing double vision when you encounter it. In the two workshops he will present key elements of both the assessment (workshop 1) and treatment options which complement VT (workshop 2) when helping the patient with double vision in reestablishing their symmetrical use of self. One of the big fears we share is creating constant double vision with their patient. Dr. Harris will tell the story of his one and only case that ended with his patient Matt Mathews having constant double vision. Matt, who was 16 years old at the time of starting VT in 1982, will be part of the presentation and talk about his experience in VT and his successful life.
Glen Steele
The Critical Link Between Vision and Overall Development
This course will briefly outline the critical importance of vision in overall development and why it is important to identify issues early. There will be discussion of HOW the process of vision directs and influences all action(s) that are so important during development. Also, the course will include methods for examination of the typical child including management.
2026-04-18
- DOUBLE VISION
- Plennary Hall
Rob Lewis Understanding and dealing with diplopia in the context of developmental strabismus There are significant concerns among the visual care community about the possibility of developin...
Rob Lewis
Understanding and dealing with diplopia in the context of developmental strabismus
There are significant concerns among the visual care community about the possibility of developing permanent or persistent double vision following interventions for strabismus. The discussion will include an explanation of persistent misunderstandings about visual development, the nature of diplopia and the organization of the visual field that lead to persistent concerns about diplopia in the treatment of strabismus. This presentation will discuss why diplopia is sometimes encountered following surgery for strabismus, why diplopia need not be a permanent outcome, and will discuss the management and elimination of diplopia, when present, through a combination of lenses and Visual Therapy. Selected visual therapy techniques will be demonstrated in the workshops.
Vassilis Kokotas
Re-aligning vision: Working behind the scenes to treat diplopia
The presentation will focus on the reasoning for diplopia management during a Vision Training program. Diplopia is often faced with fear as a symptom but it can be used also as a feedback mechanism for recalibrating binocularity and increasing awareness. As therapists we can reframe and alter the conditions under which our patients' experiences will guide them to a therapeutic result. Optical, perceptual and communication parameters will be discussed in order to provide the necessary background for providing successful treatment and setting the basis for what will be presented during the workshops.
Paul Harris and Matt Mathews
The Clinical Evaluation and Management of Patients Who Present with Diplopia
Dr. Harris will present a protocol for assessing double vision when you encounter it. In the two workshops he will present key elements of both the assessment (workshop 1) and treatment options which complement VT (workshop 2) when helping the patient with double vision in reestablishing their symmetrical use of self. One of the big fears we share is creating constant double vision with their patient. Dr. Harris will tell the story of his one and only case that ended with his patient Matt Mathews having constant double vision. Matt, who was 16 years old at the time of starting VT in 1982, will be part of the presentation and talk about his experience in VT and his successful life.
Glen Steele
The Critical Link Between Vision and Overall Development
This course will briefly outline the critical importance of vision in overall development and why it is important to identify issues early. There will be discussion of HOW the process of vision directs and influences all action(s) that are so important during development. Also, the course will include methods for examination of the typical child including management.
- PRESBIOPIA
- Plennary Hall
2026-04-19
- DOUBLE VISION
- Workshop D
The workshop will demonstrate the use of loose prisms and lenses to increase spatial sensitivity and awareness, leading to the elimination of diplopia if present, with an improved and more u...
The workshop will demonstrate the use of loose prisms and lenses to increase spatial sensitivity and awareness, leading to the elimination of diplopia if present, with an improved and more useful organization of the binocular visual field.
Prisms will be used to increase the sensitivity to visual directionality and the ability to direct gaze to respond to visual likes and differences. One definition of binocularity is the simultaneous comparison of likes and differences within the visual system.
Minus lenses will be used in a progressive sequence to demonstrate the inborn awareness of three-dimensional space, first through one visual channel, then the other, leading to the ability to simultaneously compare, integrate, and organize the light through both eyes into a visual solid in three dimensions commonly known as a stereo volume.
Equipment needed: 3 Hart Charts and blue tack to hang them with. Full diameter loose minus lenses of -1.00, -3.00, and -6.00. Enough of each power that approximately ½ of the class could be using a given power. Two loose prism sets including square prisms of up to approximately 30Δ such as are commonly found in exam rooms.
- DOUBLE VISION
- Workshop D
The workshop will demonstrate the use of loose prisms and lenses to increase spatial sensitivity and awareness, leading to the elimination of diplopia if present, with an improved and more u...
The workshop will demonstrate the use of loose prisms and lenses to increase spatial sensitivity and awareness, leading to the elimination of diplopia if present, with an improved and more useful organization of the binocular visual field.
Prisms will be used to increase the sensitivity to visual directionality and the ability to direct gaze to respond to visual likes and differences. One definition of binocularity is the simultaneous comparison of likes and differences within the visual system.
Minus lenses will be used in a progressive sequence to demonstrate the inborn awareness of three-dimensional space, first through one visual channel, then the other, leading to the ability to simultaneously compare, integrate, and organize the light through both eyes into a visual solid in three dimensions commonly known as a stereo volume.
Equipment needed: 3 Hart Charts and blue tack to hang them with. Full diameter loose minus lenses of -1.00, -3.00, and -6.00. Enough of each power that approximately ½ of the class could be using a given power. Two loose prism sets including square prisms of up to approximately 30Δ such as are commonly found in exam rooms.
- DOUBLE VISION
- Workshop D
This workshop will demonstrate the use of Polaroid targets in a progressive series, leading from the use of either visual channel as primary to maintain awareness and lead movement, through...
This workshop will demonstrate the use of Polaroid targets in a progressive series, leading from the use of either visual channel as primary to maintain awareness and lead movement, through the ability to use the two visual channels simultaneously not only to guide movement, but to make subtle judgements of visual space including a stereoptical visual volume seen in three dimensions. Each member of the workshop will be invited to experience the technique as if they were patients as time allows.
Equipment needed: A vectogram holder such as the Dual Polachrome holder sold through Bernell and others. Vectograms including, two sets of Quoits, and the Clown. Vision Assessment Corporation vectographic slides including, Gnome, Frog, and two of either Chain or Gem without central target. Enough Polaroid glasses so most of the group can wear the glasses during the demonstrations if they choose. A badminton racket with the strings removed (Can often be found at a thrift store).
- DOUBLE VISION
- Workshop D
This workshop will demonstrate the use of Polaroid targets in a progressive series, leading from the use of either visual channel as primary to maintain awareness and lead movement, through...
This workshop will demonstrate the use of Polaroid targets in a progressive series, leading from the use of either visual channel as primary to maintain awareness and lead movement, through the ability to use the two visual channels simultaneously not only to guide movement, but to make subtle judgements of visual space including a stereoptical visual volume seen in three dimensions. Each member of the workshop will be invited to experience the technique as if they were patients as time allows.
Equipment needed: A vectogram holder such as the Dual Polachrome holder sold through Bernell and others. Vectograms including, two sets of Quoits, and the Clown. Vision Assessment Corporation vectographic slides including, Gnome, Frog, and two of either Chain or Gem without central target. Enough Polaroid glasses so most of the group can wear the glasses during the demonstrations if they choose. A badminton racket with the strings removed (Can often be found at a thrift store).
