Sensory Disabilities
A Sensory Disability pertains to the impairment of the different senses, including sight,hearing, taste, touch, smell, and/or spatial awareness. It covers conditions such as blindness, hearing impairment, deafness, and hearing loss (Abdullah et al., 2022).
As mentioned by Abdullah et al. (2021), the following are the definitions by the World Health Organization for the following impairments.
- Visual Impairment – This refers to a decrease or reduction in vision that cannot be corrected by conventional glasses or contact lenses, hindering an individual’s capacity to function in specific or all tasks.
- Blindness – This pertains to severe incapacity to distinguish light from darkness or the total inability to see.
- Hearing Loss- This is the reduction in auditory sensitivity at any level.
- Deafness-This is the complete or total loss of hearing in both ears.
Type of Sensory Disabilities: Visual Disabilities
1. Blindness – This is a total loss of vision that incapacitates the individual from perceiving visual input or having a very limited light perception. Blindness is caused by either congenital conditions, retinal diseases, eye injuries, glaucoma or cataracts, or optic nerve damage. Individuals who suffer from blindness can be trained in mobility, taught Braille, provided with assistive devices, or immersed in environmental adaptations to better function.
2. Low Vision- This impairment cannot be corrected fully with glasses, contact lenses, or surgery and greatly affects daily functions. Low vision can be associated with macular degeneration, diabetic retinopathy, glaucoma, cataracts, or other genetic conditions. People who have low vision can use high-powered glasses or magnifiers, assistive devices, or environmental modifications. Learners who have this can be given large-print materials, high-contrast visuals, or be required to be seated in the front-most part of the room.
3. Color Blindness- A person with this condition has difficulty or inability to distinguish colors, most commonly red and green. The way persons with color blindness see colors differently than most people. The common causes of this are retinal detachment, eye disease, radiation treatment or chemical exposure, or damage to the optic nerve or brain. The usual interventions for individuals with this condition include color-coded or labeled materials with symbols or textures, apps or software for color identification, or the use of high-contrast visuals.
4. Cortical Visual Impairment- This is a visual disorder caused by damage to the visual processing areas of the brain. Persons who have this dysfunction have low vision and have difficulty seeing things. It may be caused by premature birth, brain injury, infections, and seizure disorders. Interventions for this may include visual stimulation therapy, consistent visual environments, the use of familiar objects and routines, or collaboration with specialists.
5. Tunnel Vision (Peripheral Field Loss)- This is often referred to as “tunnel vision” because the person who has this impairment appears to be looking into the tunnel. This can be mild to severe. This can be caused by different factors, like glaucoma, retinitis pigmentosa, stroke or brain injury, or optic nerve damage. Some adaptive techniques may include orientation and mobility training, the use of wide-field lenses, training to increase head scanning, or environmental organization to reduce obstacles.
Night Blindness (Nyctalopia)- This is the difficulty of seeing in low light or darkness. It is a symptom of other underlying conditions, not a disease itself. The common reasons for this are vitamin A deficiency, retinitis pigmentosa, congenital disorder, or cataracts.
Below are some teaching practices to aid learners with visual disabilities.
- Provide learners with accessible notes/materials or test format (Braille, audio, or large print).
- Verbalize written content.
- Verbally explain or record procedural or calculation steps through audio.
- Provide learners with alternatives, whether they prefer audio, video, notes with large text, or PowerPoint slides.
- Give feedback verbally.
- Provide individual orientation to labs or unfamiliar equipment.
- When using video or audio, pause from time to time for explanation.
- Address glare issues from fluorescent lights or sunlight discreetly.
- Use tactile graphics when visual information is essential.
- Ensure web-based content follows accessible design standards to work with screen readers and other assistive technologies.
- Offer alternative assessment formats appropriate for learners’ needs and strengths.
- Include tactile diagrams, maps, or charts where needed.
- Label classroom areas with Braille, tactile symbols, or large-print labels.
- Use high-contrast colors for classroom materials and walls to improve visibility.
- Allow learners extra time to finish tasks.
- In a heterogeneous class, assign peer buddies.
- Consult experts to provide better support for visually impaired learners.
- Undergo constant training and professional development.
Physical Disabilities
A Physical Disability is defined as “a long-term loss or impairment of a person’s body function, resulting in limited mobility, endurance, dexterity, or physical function (GPII Developer Space, 2019, as cited in Heideveld et al.,2021).
Types of Physical Disabilities
Cerebral Palsy
This is a group of neurological conditions affecting body movement and posture. It is caused by damage to the developing brain, predominantly prior to birth. Interventions for individuals with this condition can be physical therapy, the use of mobility aids, speech and language therapy, or medication for muscle stiffness.
Spina Bifida
This is a congenital condition where the spinal cord does not develop properly, leading to physical and sometimes cognitive challenges. Major causes for this can be neural tube defects during fetal development or genetic and environmental factors. To help individuals who possess this disability, they may undergo surgery or physical therapy. In order to assist their mobility, an orthotic or wheelchair can be provided. Other interventions may also include bladder and bowel management programs or educational accommodations and accessible facilities.
Muscular Dystrophy
These are genetic diseases that cause progressive muscle weakness and degeneration. The major factor for this is genetic mutations that affect muscle proteins. Those who have these conditions may undergo physical and occupational therapy and medication. In schools, learners who have these conditions should be provided with inclusive education planning and support.
Amputation and Limb Loss
This is the absence of a limb due to injury, surgical removal, or congenital conditions. Some common causes of this are congenital limb deficiencies, traumatic accidents, disease, and congenital conditions. Prosthetic limbs, physical and occupational therapy, environmental and classroom accommodations, and emotional and psychological support can be provided to those who have these conditions.
Spinal Cord Injury
This is caused by a traumatic injury, infection, or disease that results in partial or total loss of mobility and sensation below the site of the injury. Interventions for this include rehabilitation programs, assistive devices, accessible environments, or personal care and support.
Multiple Sclerosis
This is a chronic illness that affects the central nervous system, leading to communication problems between the brain and the body. The common reasons for this are autoimmune responses damaging the myelin sheath and genetic and environmental factors. Individuals who have this condition shall undergo medication, physical therapy, or fatigue management. In the classroom, teachers may employ rest periods and flexible scheduling.
Polio
This is an illness caused by a virus that mostly affects nerves in the spinal cord or brain stem. After years of recovery, individuals who are affected by this can experience muscle weakness and fatigue. The common support to be given to those who have polio can be physical therapy or orthotic support.
Here are some classroom accommodations for learners with physical disabilities
- Ensure accessibility (ramps, elevators, or wide doorways)
- Arrangement of tables and chairs that allows free movement
- Provide an adjustable table or desk
- Use stabilized seating for posture support
- Allow extra time to finish classroom tasks and assignments
- Use of interactive or assistive technology (e.g., speech-to-text, dictation software)
- Consult professionals for better accommodations
- Plan using the Individualized Education Program or 504 team
- In a heterogeneous classroom, foster collaboration and give learners flexible roles
- Educate other classmates on disability awareness and respectful interactions
- Prepare visual schedules or checklists
- Undergo constant training and professional development
Hearing Disabilities
Types of Hearing Disabilities
1. Conductive Hearing Loss
This happens when the outer or middle ear prevents sound from being conducted to the inner ear. This can be caused by ear infections,fluid in the middle ear, earwax buildup, perforated eardrum, or malformation of ear structures. This can be treated through earwax removal, antibiotics,drainage of fluid,hearing aids, or surgery.
2. Sensorineural Hearing Loss
This occurs when there is damage to the inner ear or auditory nerve. This affects both the volume and clarity of sound. To manage or treat this, an individual who has this condition may be provided hearing aids or cochlear implants, assistive devices,or speech and language therapy.
3. Mixed Hearing Loss
This is a combination of conductive and sensorineural hearing loss when there is damage to both the inner and outer/middle ear. The usual interventions for this include hearing aids, hearing implants, surgery, or regular audiological monitoring.
4. Central Auditory Processing Disorder (CAPD)
This can be associated with difficulty processing sound signals, despite normal hearing ability. Individuals who have this condition have difficulty understanding speech, especially in noisy environments. The common interventions for this may include auditory training,environmental modifications, speech-language therapy, or preferential classroom training.
5. Auditory Neuropathy Spectrum Disorder (ANSD)
This is a hearing disorder where the inner ear can detect sound, but the auditory nerve fails to transmit sound information effectively to the brain. Similar to other hearing disabilities,individuals who have this disorder may be provided with hearing aids or cochlear implants. In the classroom, learners can be afforded educational accommodations or visual communication methods.
Below are some teacher practices to accommodate learners with hearing disabilities.
- Use visual aids (PowerPoint, Canva, charts, images, or diagrams)
- Speak slowly and at a moderate pace
- Face the learners to allow lip reading
- Use captioned videos or multimedia
- Use sign language if needed
- Allow use of assistive devices (hearing aids, cochlear implants, or speech-to-text software)
- Let learners sit in the front for a clearer view of the teacher’s face
- Give written notes
- Provide extra time for processing oral instructions or completing listening-based tasks
- If possible, provide recorded lessons with captions
- Provide awareness to classmates about hearing disabilities
- Use gestures, facial expressions, and body language
- Use visual alerts during fire or earthquake drills
- Develop a personalized emergency plan
- Work with experts to better address needs or accommodate learners