Yes, you can. We make special testing accommodations for examinees with disabilities. Please inquire at the institution conducting the test in the country/area where you plan to take it. Those who would like to make special testing accommodations need to submit " Request Form for Special Testing Accommodations " along with their application form upon registration.
To get a work visa in Japan you need to find a sponsoring company. In most cases this requires an undergraduate degree as it is much harder for companies to sponsor workers without higher education. (There are exceptions for those with ten years professional working experience in the trade you are looking to work). Once you have found an employer to hire you (well done!) then you will receive a Certificate of Eligibility (COE) from your local Japanese Embassy, which will give you a time window within which to come to Japan before it is invalidated. Once you arrive in Japan you will present this COE to immigration officers at the airport, at which point they will get your details and issue you with your very own Zairyuu Card (Residence Card, colloquially called a Gaijin card). You can find employers who sponsor working visas on our board at JobsinJapan.com and checking the box for “Overseas Applicants Allowed” to filter out jobs that are only available to people with a current working visa.
This can vary, but usually it takes 4-8 weeks for a Certificate of Eligibility to come through. This depends on the time of year and how busy they are at immigration, so be prepared for it to take anywhere from a month to two months or more from when you get your job offer.