As per the blog "Using a microscope with students with visual impairments"
As middle school and high school life science students are introduced to the light microscope, students who are visually impaired should also be taught the parts of the microscope and their functions. This can be accomplished more effectively by allowing visually impaired students to explore the microscope tactually while the instructor is teaching. Ideally, the TVI will be present for this lesson. The TVI should review the parts of the microscope before the lesson. If possible, obtain an older microscope for the student to use so that the student does not accidentally damage the microscope while exploring it. If an older microscope is not available, an inexpensive, small microscope may be used.
This activity is designed as both instruction and assessment of the parts of the microscope and the function of each part.
If an actual microscope is not availabe, the text used in class will likely contain a raised line of a microscope. Alternatively, the APH Life Science Tactile Graphics has a nice raised line of a microscope that may be utilized.
Please refer to the Using a microscope with students with visual impairments blog on this website for more information on providing magnification or models of microscope images for students with visual impairment while.