The Brock Technique is a classic vision therapy tool for the diagnosis and training of strabismus ("crossed eyes") and amblyopia ("lazy eye"). Keystone View has combined it with a compact, easy to use light box for the clinic or home, eliminating the need for projections viewing.
- A complete peripheral approach to stereopsis therapy
- 9 exercise procedures for amblyopia, including cheiroscopic tracing and manipulation of a pointer light, which also aids the development of hand eye coordination
- Training can be implemented at any developmental level where a patient displays fusion (the ability of both eyes to work together)
- Ideal for pre-school because it is non-verbal in nature, with slide subjects including animals and other items of interest to children, and most exercises can be presented as games in a home setting
- Includes 6 progress-monitoring tests using common office materials and equipment. Suppressions are quickly noted and overcome through a developmental training format.
- Requires a 2121 Light Box and a 5365 Transparency Set.
More About the Keystone View Brock Technique of Strabismus Therapy
How it works:
All testing and training is conducted within normal room surroundings, avoiding the artificial environment of a closed instrument. Normally trial frames and lenses or prisms are not required, and there is no need for constant occlusion.
For testing, Brock Technique materials provide a definitive diagnosis of the strabismic condition and include tests for the determination of ARC, peripheral and central levels of fusion and suppression, as well as procedures to indicate the presence of alternating strabismus (being "cross eyed"). Many tests may be performed using common materials like string or a pocket flashlight.
Training exercises have been scientifically developed to correspond to the normal progress of visual skills:
Establishment of normal RC
Beginning of simultaneous perception
Development of peripheral stereopsis (the blending of images from both eyes into one)
Development of macular stereopsis
The program uses 28 large plastic slides that are placed on a lightbox and that the patient views through red/green anaglyph filters. The first series of tests determine a patient's level of fusion, then check retinal correspondence and simultaneous perception, probing for fusion as far as 60 degrees peripherally, or beyond normal suppression areas.
All slides are printed in red, green and black on clear acetate, presenting forms, figures and photo scenes that may be easily recognized at distances from 10" to 20'. Controls also are provided to insure that guesswork and "faking" are eliminated.
Slides are easily presented by the test administrator and at reading distance can be handled by the patient directly, and may be superimposed and interchanged to meet varying conditions. Many of the slides have scales that can be read in diopters at the 16" distance to indicate the magnitude of patient phorias.