Quizzes, tests, exercises and puzzles for English as a Second Language (ESL), English as a foreign language (EFL), Teaching EFL (TEFL), Test of EFL (TOEFL), English for speakers of other languages (ESOL), Teaching ESOL (TESOL), TOEIC.
Avoid too strong light
If the source of light is too strong e.g. light from a lamp falling straight on you then you should try to defuse and soften it. A simple method is to bring a thin and translucent sheet between light source and yourself. The sheet should not be so thick and be placed in such a way so that it allows permeation of enough light on you.