A Vinsighte team member assists a visually impaired student with the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students use the Visis app, which aims at helping them read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Meshach Odion, 17, a visually impaired student uses the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

A visually impaired student uses the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

A visually impaired student uses the Visis app at Pacelli School for The Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students use the Visis app at Pacelli School for The Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students walk in a line at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Vinsighte team members assists Mesach Odion, 17, a visually impaired student, use the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students walk in a line at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students use the Visis app, which aims at helping them read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

A visually impaired student uses the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students use the Visis app at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students use the Visis app at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

A visually impaired student uses the Visis app, which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Visually impaired students sit at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

Meshach Odion, 17, a visually impaired student uses the Visis app which aims at helping him read, at Pacelli School for the Blind and Partially Sighted Children, in Lagos, Nigeria, October 12, 2022. REUTERS/Temilade Adelaja 

A 19-year-old partially blind tiger named Rambo looks on from inside a cage on a truck, after being rescued by a team of veterinarians and Wildlife Friends Foundation staff from a bankrupted Phuket Zoo, which was forced to shut down after the COVID-19 crisis and the lack of tourism in Phuket, Thailand June 7, 2022. REUTERS/Jorge Silva TPX IMAGES OF THE DAY 

A 19-year-old partially blind tiger named Rambo looks on from inside a cage on a truck, after being rescued by a team of veterinarians and Wildlife Friends Foundation staff from a bankrupted Phuket Zoo, which was forced to shut down after the COVID-19 crisis and the lack of tourism in Phuket, Thailand June 7, 2022. REUTERS/Jorge Silva 

A 19-year-old partially blind tiger named Rambo looks on from inside a cage on a truck, after being rescued by a team of veterinarians and Wildlife Friends Foundation staff from a bankrupted Phuket Zoo, which was forced to shut down after the COVID-19 crisis and the lack of tourism in Phuket, Thailand June 7, 2022. REUTERS/Jorge Silva 

A partially blind tiger is seen at its confinement cage in Tiger Kingdom zoo, as Phuket gets ready to open its doors to overseas tourists from July 1 allowing fully vaccinated foreigners to visit the resort island without quarantine, Phuket, Thailand June 28, 2021. Picture taken June 28, 2021. REUTERS/Jorge Silva 

A visitor explores a tactile image representing the portrait of Russian President Vladimir Putin, at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin TPX IMAGES OF THE DAY 

An employee helps a visitor to explore a tactile image representing the portrait of Russian President Vladimir Putin, at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin 

A man with vision impairment feels a bust of dissident author Alexander Solzhenitsyn next to a bust of dissident and scientist Andrei Sakharov at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin 

A visitor explores a tactile image representing the portrait of Russian President Vladimir Putin, at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin 

A visitor reads the Braille version of the Russian Coat of Arms History at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin 

A visitor explores relief images as she reads a Braille book at a specialized library for blind and partially sighted people in Krasnoyarsk, Russia September 11, 2018. REUTERS/Ilya Naymushin 

Kenyan runner Egla Musop Jebichii, 28, who is partially blind, poses with her 3rd position medal won in Dubai to qualify to run in the Paralympics in Rio de Janeiro this year, Iten, western Kenya, April 11, 2016. Jebichii is married to an athlete and has one son, who is five. In Kenya's western town of Iten, known as the "Home of Champions" for drawing runners to train from around the world, athletes rise to pound the track and dirt roads at dawn. Kenyan athletics champions like marathon world record holder Dennis Kimetto and 800 metre champion David Rudisha have trained there, alongside Britain's double Olympic and world champion Mo Farah and a host of others. At 2,400 metres (7,900 feet), the altitude makes Iten an ideal location for established middle and long distance races to build their endurance and stamina. REUTERS/Siegfried Modola SEARCH "ITEN MODOLA" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES? 

Disabled Kenyan runner Egla Musop Jebichii, 28, who is partially blind, prepares for her morning training session at her home in Iten, western Kenya, April 11, 2016. Jebichii has qualified to participate in the Paralympics in Rio de Janeiro this year, it will be her second time competing in the Paralympics. Jebichii is married to an athlete and has one son, who is five. REUTERS/Siegfried Modola SEARCH "ITEN MODOLA" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

Disabled Kenyan runner Egla Musop Jebichii, 28, who is partially blind, prepares for her morning training session from her home in Iten, western Kenya, April 11, 2016. Jebichii has qualified to participate in the Paralympics in Rio de Janeiro this year, it will be her second time competing in the Paralympics. Jebichii is married to an athlete and has one son, who is five. REUTERS/Siegfried Modola SEARCH "ITEN MODOLA" FOR THIS STORY. SEARCH "THE WIDER IMAGE" FOR ALL STORIES 

A visitor reads a book written in Braille at a specialized library for blind and partially sighted people in Krasnoyarsk, Siberia, Russia, March 15, 2016. REUTERS/Ilya Naymushin 

A visitor reads a book written in Braille at a specialized library for blind and partially sighted people in Krasnoyarsk, Siberia, Russia, March 15, 2016. REUTERS/Ilya Naymushin 

A Muslim man arrives to offer Friday prayers in front of Baitul Mukarram, Bangladesh's national mosque, during the holy fasting month of Ramadan in Dhaka July 11, 2014. REUTERS/Andrew Biraj (BANGLADESH - Tags: RELIGION SOCIETY) 

People who are blind or visually impaired work at an electrical parts plant in Vitebsk, some 260 km (162 miles) northeast of Minsk November 8, 2012. About 150 people, who lost their eyesight completely or partially due to disease or injury, work and receive rehabilitation at the plant, according to a deputy manager. The International Day of the Blind will be marked on November 13. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH BUSINESS EMPLOYMENT) 

A woman who is visually impaired works at an electrical parts plant in Vitebsk, some 260 km (162 miles) northeast of Minsk November 8, 2012. About 150 people, who lost their eyesight completely or partially due to disease or injury, work and receive rehabilitation at the plant. The International Day of the Blind will be marked on November 13. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH BUSINESS EMPLOYMENT) 

A woman who is visually impaired works at an electrical parts plant in Vitebsk, some 260 km (162 miles) northeast of Minsk November 8, 2012. About 150 people, who lost their eyesight completely or partially due to disease or injury, work and receive rehabilitation at the plant, according to a deputy manager. The International Day of the Blind will be marked on November 13. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH BUSINESS EMPLOYMENT) 

Dmitry Kholodovich (L), who is blind, shows his disabled person card to a tram conductor as he goes home after a futsal training session in Vitebsk, some 260 km (162 miles) northeast of Minsk November 7, 2012. Kholodovich is part of a group of men, who lost their eyesight completely or partially due to disease or injury, and has set up a futsal team amongst themselves. The group gathers a few times a week for training ahead of a competition commemorating the International Day of the Blind on November 13. Photo taken November 7, 2012. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH TRANSPORT SPORT) 

Oksana Ivanova (back), a visually impaired woman, walks with her son David at her house after a goalball training session in Vitebsk, some 260 km (162 miles) northeast of Minsk November 7, 2012. Ivanova is part of a group of women, who lost their eyesight completely or partially due to disease or injury, and has set up a goalball team amongst themselves. The group gathers a few times a week for training ahead of a competition commemorating the International Day of the Blind on November 13. Photo taken November 7, 2012. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH SPORT) 

Coach Oleg Kirillov prepares metal pieces to place inside balls for futsal training of his team comprising of men who are blind or visually impaired, in Vitebsk, some 260 km (162 miles) northeast of Minsk November 7, 2012. The men, who lost their eyesight completely or partially due to disease or injury, set up a futsal team amongst themselves, gathering a few times a week for training ahead of a competition commemorating the International Day of the Blind on November 13. Photo taken November 7, 2012. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH) 

Coach Oleg Kirillov (R) speaks with Dmitry Kholodovich, who is blind, during a futsal training session in Vitebsk, some 260 km (162 miles) northeast of Minsk November 7, 2012. Men, who lost their eyesight completely or partially due to disease or injury, set up a futsal team amongst themselves, gathering a few times a week for training ahead of a competition commemorating the International Day of the Blind on November 13. Photo taken November 7, 2012. REUTERS/Vasily Fedosenko (BELARUS - Tags: SOCIETY HEALTH) 

Marussia Formula One test driver Maria de Villota of Spain attends her news conference in Madrid October 11, 2012. De Villota made her first public appearance after her horrific accident during a testing session in England last July in which she lost her right eye. REUTERS/Sergio Perez (SPAIN - Tags: SPORT MOTORSPORT HEADSHOT TPX IMAGES OF THE DAY) 

Partially sighted musician and filmmaker Ibon Casas (R) talks to collaborator Paula Arbide (L) and manager Txepe Sanchez, next to his guide dog Roger the Dodger at the Kursaal Centre on the fifth day of the San Sebastian Film Festival September 25, 2012. Casas, who suffers from degenerative retinitis pigmentosa, is making a documentary about the festival as part of his audiovisual project and webpage dametvision.com. He aims to increase awareness about the condition, and to show that with help, blindness does not have to be a barrier for creative projects. REUTERS/Vincent West (SPAIN - Tags: ENTERTAINMENT ANIMALS SOCIETY HEALTH) 

Vernon Van Wie, 91, who is partially blind, stands outside his trailer in which he has lived for 20 years, in Village Trailer Park in Santa Monica July 13, 2012. Developer Marc Luzzatto wants to relocate residents from the trailer park to make way for nearly 500 residences, office space, stores, cafes and yoga studios, close to where a light rail line is being built to connect downtown Los Angeles to the ocean. Village Trailer Park was built in 1951, and 90 percent of its residents are elderly, disabled or both, according to the Legal Aid Society. Many have lived there for decades in old trailers which they bought. The property is valued at as much as $30 million, according the LA Times. REUTERS/Lucy Nicholson (UNITED STATES - Tags: SOCIETY REAL ESTATE BUSINESS POLITICS) 

Vernon Van Wie, 91, who is partially blind, stands outside his trailer in which he has lived for 20 years, in Village Trailer Park in Santa Monica, California July 13, 2012. Developer Marc Luzzatto wants to relocate residents from the trailer park to make way for nearly 500 residences, office space, stores, cafes and yoga studios, close to where a light rail line is being built to connect downtown Los Angeles to the ocean. Village Trailer Park was built in 1951, and 90 percent of its residents are elderly, disabled or both, according to the Legal Aid Society. Many have lived there for decades in old trailers which they bought. The property is valued at as much as $30 million, according the LA Times. REUTERS/Lucy Nicholson (UNITED STATES - Tags: POLITICS REAL ESTATE BUSINESS SOCIETY TPX IMAGES OF THE DAY) 

A Hindu devotee who is blind in his left eye is seen wearing a head band with a portrait of Lord Shiva during the Shrawan Sombar festival in Kathmandu July 18, 2011. The festival lasts for a month, during which devotees worship Lord Shiva and pray for happiness for their families. REUTERS/Navesh Chitrakar (NEPAL - Tags: RELIGION) 

Partial deaf-blind Cristina (L), 22, embraces deaf-blind Luis Alberto, 26, at the Santa Angela de la Cruz centre in Salteras, near Seville December 15, 2010. The Santa Angela de la Cruz centre was set up in October to house visually and hearing impaired adults and to enrich their lives. At the centre, the residents are taught skills to cope with everyday life. Picture taken December 15. REUTERS/Marcelo del Pozo (SPAIN - Tags: HEALTH SOCIETY) 

Partial deaf-blind Cristina (L), 22, embraces deaf-blind Luis Alberto, 26, at the Santa Angela de la Cruz centre in Salteras, near Seville December 15, 2010. The Santa Angela de la Cruz centre was set up in October to house visually and hearing impaired adults and to enrich their lives. At the centre, the residents are taught skills to cope with everyday life. Picture taken December 15. REUTERS/Marcelo del Pozo (SPAIN - Tags: HEALTH SOCIETY) 

Partial deaf-blind Cristina, 22, walks at the Santa Angela de la Cruz centre in Salteras, near Seville December 16, 2010. The Santa Angela de la Cruz centre was set up in October to house visually and hearing impaired adults and to enrich their lives. At the centre, the residents are taught skills to cope with everyday life. Picture taken December 16. REUTERS/Marcelo del Pozo (SPAIN - Tags: SOCIETY HEALTH) 

Petr Naumov, a 61-year-old pensioner who is partially blind, holds a trophy in front of a World War Two monument after completing his marathon from Russia's western city of Kaliningrad to the country's far eastern city of Vladivostok, October 23, 2010. Naumov spent seven months undertaking this journey of more than 12000 kilometres (7456 miles). REUTERS/Yuri Maltsev (RUSSIA - Tags: SOCIETY SPORT ATHLETICS) 

Petr Naumov, a 61-year-old pensioner who is partially blind, completes his marathon from Russia's western city of Kaliningrad to the country's far eastern city of Vladivostok, October 23, 2010. Naumov spent seven months undertaking this journey of more than 12000 kilometres (7456 miles). REUTERS/Yuri Maltsev (RUSSIA - Tags: SOCIETY SPORT ATHLETICS) 

Petr Naumov, a 61-year-old pensioner who is partially blind, wipes his face after completing his marathon from Russia's western city of Kaliningrad to the country's far eastern city of Vladivostok, October 23, 2010. Naumov spent seven months undertaking this journey of more than 12000 kilometres (7456 miles). REUTERS/Yuri Maltsev (RUSSIA - Tags: SOCIETY SPORT ATHLETICS) 

Ghulam Nabi Hajam, a Kashmiri paramedic, cleans blood from the face of Abdul Ahad, who suffers partial blindness, after a leech therapy session inside a hospital in Srinagar May 2, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR) 

A leech hangs from the face of a Kashmiri patient Abdul Ahad, who suffers partial blindness, during a leech therapy session inside a hospital in Srinagar May 2, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR) 

Doctor Naseer Ahmad Hakeem measures the blood pressure of Kashmiri patient Abdul Ahad, who suffers partial blindness, after a leech therapy session inside a hospital in Srinagar May 2, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR) 

Ghulam Nabi Hajam, a Kashmiri paramedic applies leeches on the face of Abdul Ahad, who suffers partial blindness, during a leech therapy session inside a hospital in Srinagar May 2, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR) 

A leech hangs from the face of a Kashmiri patient Abdul Ahad, who suffers partial blindness, during a leech therapy session inside a hospital in Srinagar May 2, 2008. REUTERS/Fayaz Kabli (INDIAN-ADMINISTERED KASHMIR) 

A partially blind man casts his vote in Zimbabwe's presidential and parliamentary elections in the capital Harare March 29, 2008. Zimbabweans began voting on Saturday in the most crucial election since independence from Britain in 1980, with veteran President Robert Mugabe facing the biggest challenge of his 28-year-rule. The house of a Zimbabwean ruling party parliamentary candidate was bombed early on Saturday in the first violence in the country's election, police said. REUTERS/Howard Burditt (ZIMBABWE) 

A man injured during post-election violence rests at the corridors of the hospital in the western town of Kisumu January 16, 2008. Kenyan police battled hundreds of opposition protesters on Wednesday, killing two, as the opposition defied a ban on rallies against President Mwai Kibaki's disputed re-election, witnesses said. REUTERS/Thomas Mukoya (KENYA) 

An Afghan man walks in a Kabul market in Kabul August 24, 2007. REUTERS/Desmond Boylan (AFGHANISTAN) 

Iraq war veteran Ken Sargent catches his breath in his garage after working out at home at Camp Pendleton, California March 14, 2007. On August 5, 2004, a bullet erased most of Sargent's vision and blew two inches off the top left side of his brain, destroying parts of his memory and mental function. REUTERS/Mike Blake (UNITED STATES) 

French Serge Ricoeur tests a new ATM machine (money distributor), especially adapted for the use of the blind people, in Sotteville Les Rouen, west of Paris December 13, 2005. The ATM machine is one of the two first money distributors adapted to the use of blind and partially sighted people in [Europe], which will be inaugurated on Thursday.