Thu. Jul 30th, 2026

Blind students are being failed by the way they write, not their ability, study shows

Adele Nguizana, wearing a dark jacket over a pink dress, smiles as she shakes hands across a conference table with her supervisor, Dr Paule Marie Kougane, who wears a colorful red-patterned dress. A green thesis folder rests on the table between them.
Adele Nguizana (right) exchanges a celebratory handshake with her dissertation supervisor, Dr Paule Marie Kougane, following the successful defense of her Master’s thesis on braille spelling challenges.

Princeley Kesah, Cameroon

Adele Nguizana, 27, a woman with a vision impairment, has been worried for 14 years by the impact of braille errors on the academic performance of blind students like herself. Braille is a writing system widely used by millions of blind and partially sighted persons around the world.

Nguizana revealed in an interview with Disability News Africa that while in school, she wrote exams confidently, expecting to score high, only to sometimes end up with failing grades. During her undergraduate studies in Bilingual Studies at the University of Buea, Cameroon, a lecturer invited her to spell out certain words. This was after he had received the transcript of her Continuous Assessment. “I spelled them correctly and he asked why I wrote them wrongly. I explained to him that in braille, an unintended dot changes everything, and sometimes even a whole paragraph,” she said.

Six people stand behind a presentation table with handwritten name placards. Adele Nguizana stands center-left holding up a green folder, flanked by Dr Paule Marie Kougane, panel chair Prof. Blasius Chiatoh, and other academic officials, in front of a wooden wall with Cameroonian flags.
Adele Nguizana (third from left) holds her Master’s thesis alongside her supervisor Dr Paule Marie Kougane (second from left), panel chair Prof. Blasius Chiatoh (third from right), and committee members at the Faculty of Arts boardroom in Buea.

These experiences inspired Nguizana to base her Master’s dissertation research on the subject. If students with vision impairment now have a glimmer of hope that the unintended errors which often hamper their academic performance could soon be addressed, then it is thanks to Nguizana’s study. The dissertation, titled Linguistic Spelling Challenges of Braille User Students at the University of Buea, was defended recently at the boardroom of the university’s Faculty of Arts.

Despite studying so hard, some learners with vision impairment still end up scoring low and, in some cases, failing. For those who are born blind or who lose their sight at a tender age, they only hear words and never get to see their spelling. Sometimes, words are not spelled as they are pronounced. Using a descriptive qualitative design, the researcher examined nine braille scripts from two faculties of the University of Buea. Findings revealed significant errors resulting from the use of braille. The errors ranged from omission, insertion, substitution, transposition and grapheme substitution across two categories. The researcher recommends, among others, the integration of alternative assessment measures such as oral examinations and the use of computers for typing during examination sessions. This, the scholar suggested, would complement the use of braille. She equally encouraged learners with vision impairment to attend regular spelling lessons to improve their knowledge.

Adele Nguizana reaches across a draped table to shake hands with panel chairperson Prof. Blasius Chiatoh, who wears a brown pattern sweater and glasses. Placards and refreshments are visible on the table.
Head of Department and panel chair Prof. Blasius Chiatoh congratulates Adele Nguizana on her study examining how braille mechanics impact the academic performance of blind university students.

Speaking in an exclusive interview with DNA at the close of the session, Professor Blasius Chiatoh, chair of the defence panel, described the study as innovative, pertinent and timely. He said the study meaningfully identifies some of the challenges braille users face which hamper their academic performance, stressing that these students are not only graded on content but also on language. “We have to help them improve their language because it represents ideas, and presenting ideas in poor language is a serious issue,” he intimated.

Nguizana is the first person with a vision impairment to defend a Master of Arts dissertation in the Department of Linguistics, where the panel chair is currently Head of Department, and this means a lot to the department. “We are very delighted as a department that she has become the first to reach this level, and I do believe that this will open the pathway to others who may have been thinking that the Department of Linguistics is not inclusive enough,” he revealed. The academic emphasised that disability issues are understudied and undervalued within research in Cameroon, adding that once higher education begins paying attention to such neglected areas, it becomes incumbent on the state to take actionable steps to address policy gaps such as those raised in Nguizana’s study.

Adele Nguizana, wearing a dark jacket over a pink dress, smiles as she shakes hands across a conference table with her supervisor, Dr Paule Marie Kougane, who wears a colorful red-patterned dress. A green thesis folder rests on the table between them.
Adele Nguizana (right) exchanges a celebratory handshake with her dissertation supervisor, Dr Paule Marie Kougane, following the successful defense of her Master’s thesis on braille spelling challenges.

The dissertation supervisor, Dr Paule Marie Kougane, said it was not easy putting the research together due to difficulties accessing assistive technologies, adding that handling tables was particularly challenging. She, however, expressed delight that the candidate’s passion and determination saw them through to the finishing line. “It was really an interesting experience working with the candidate, and I am very happy we completed the research. I would be glad to repeat the process if I have the chance.”

Adele Nguizana was not born blind. She was sighted and attended a regular school, where she performed well. She was in Form Three when the unexpected happened. She had been experiencing pain in her eyes, but little did she know that blindness had come so near. One morning, she woke up and discovered she could no longer see anything. “I dropped out of school and was advised to enrol in a rehabilitation school to learn braille, mobility and orientation. Accepting my new reality was not easy, but I eventually did and went to the Rehabilitation Institute for the Blind in Buea, where I learned braille in 2012,” Nguizana recounted.

Adele Nguizana stands at the center of a group of supporters and academics inside a Faculty of Arts' Boardroom, holding a green dissertation folder and a white cane. Several visually impaired participants alongside her hold white canes, with Cameroonian flags and a portrait of President Paul Biya displayed on the wall behind them.
Adele Nguizana (center), holding her dissertation folder, stands with peers, university officials, and members of the visually impaired community at the University of Buea, where she became the first blind student to defend a Master’s thesis in the Department of Linguistics.

She returned to school after completing her braille lessons, hoping to excel just as she had before becoming a white cane user. It was then that she experienced first-hand the impact of braille errors on the performance of learners with vision impairment. At one point, she thought the problem was with her, but when her peers began raising similar concerns, she understood the gravity of the issue. However, real as the problem was, Nguizana did not have a solution for nearly 15 years. It was only when she enrolled for a Master’s degree in Applied Linguistics that she decided to research the problem in order to help other visually impaired peers who are held back not because they lack intelligence, but because they are disadvantaged by the mode of writing.

Speaking at the close of the defence, Nguizana’s mother said she could not be prouder of her daughter, stressing that Nguizana is the source of her hope and happiness. She may have been disappointed when her daughter lost her sight, but she now understands one thing that other parents of children with disabilities should also bear in mind:

“Disability is not inability.”

By Princely Kesah

Kesah Princely is Managing editor of Disability News Africa. He is a Disability Rights Journalist and Lecturer of International Relations and Conflict Resolution in the University of Buea, Cameroon. Kesah is Founder of Foundation for the Inclusion and Empowerment of Persons with Disabilities, a not for profit organisation championing disability inclusion. He believes that building bridges for inclusive communities is a collective effort. Contact details: princenfortoh@gmail.com 237680973157.

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