Hello I am Tomoya Handa, CO,Ph.D

A little bit about me

I am an orthoptist and work at Kitasato University in Japan which is also where I received my Ph.D in ophthalmology. I work with many talented physicians. I have over 15 years of experience and expertise in visual acuity testing and vision training concentrating on the treatment of lazy eye. I have published over 60 articles in medical journals globally.

This project is supported by JST A-STEP. I am a research representative.


What is an orthoptist?

An orthoptist is an uniquely trained health professional that evaluates and manages childhood and adult eye movement abnormalities. Orthoptists aid in the diagnosis of visual system functions involving vision, eye movement, eye alignment and binocularity. The orthoptist specializes in the non-surgical treatment of visual disorders with a variety of areas including lazy eye (amblyopia), strabismus and diplopia. Orthoptists work with ophthalmologists to formulate and implement treatment plans.

Orthoptists are uniquely trained to use specialized technology to detect and measure the progression of eye disease. These include instruments such as ultrasonography machines, topographers and fundus cameras.

Orthoptists aid in the examination of conditions that may lead to lazy eye (amblyopia) and determine if lazy eye exists. Because many of the patients are infants and young children, speaking is limited. Therefore an orthoptist must understand the visual system and it’s development behavior in order to make a sound diagnosis. Traditional treatments for lazy eye include occlusion (patching) and penalization therapy (eye drops that blur vision). The orthoptist is the front line person in implementing and monitoring the treatment.

Other conditions that an orthoptist can prescribe treatment for are refractive error (need for glasses), double vision, neurological disorders, ocular motility disorders, and rehabilitation of impaired vision.

In comparison, an optometrist is a primary care practitioner who examines eyes, gives advice on visual problems, and prescribes and fits glasses or contact lenses. When an eye disease is detected, an optometrist will generally refer patients to a specialist for further management.

Moreover, an ophthalmologist is a medical doctor who has specialist training in the diagnosis and management of disorders of the eye and visual system. Ophthalmologists can prescribe medication and perform surgical procedures and often, works together with an orthoptist in investigating and managing diseases of the eye.


My specialization and passion

I specialize in the treatment of lazy eye. Lazy eye may drastically affect children not only medically, but also socially, educationally, and emotionally. Thus treatment for lazy eye is important for pediatric ophthalmology.

I am always pushing for innovation and collaboration. With our multidisciplinary teams and access to the latest technology, we have a great opportunity to improve upon current treatment methods. I feel lazy eye treatments do not have to add physical or emotional burden to the children. Why can we not have a treatment that is both effective and fun?

As both an orthoptist and a parent, I want the best treatment results and the best experience for my children. If our children have a bad experience with the treatment, chances for success are limited. I think with our new BLOO innovation, we can achieve both great results and user experience.


Our work and research

In conjunction with our ophthalmologist and production leaders, In April 2015 we proudly launched BLOO in Japan. This innovative treatment is more efficient than traditional treatments. My mission is to establish seamless multidisciplinary teams through my clinical studies to bring more effective and efficient treatments to the world.

I invite you to read about our clinical studies regarding lazy eye and treatments. Please feel free to contact us if you have any questions.