Lighting is a complex subject that has been studied since ancient times. It has an impact on our environment, visual perception, and even on our health. There are many types of lighting, from natural to artificial, and deciding which type is best for a space depends on a range of factors like the design and purpose of the space. Natural light is the most preferred type of lighting and it can be enhanced by strategically placed windows, skylights, and other natural light sources. It is good for health and well-being as it helps combat depression and fatigue. It is also energy-efficient and aesthetically pleasing. Artificial lighting is used when there is insufficient natural light. Light fixtures such as lamps, fluorescent and LED lighting are popular with interior design, but they should be used with caution. Some fixtures may create too much glare which can cause fatigue and eye strain. It is also important to choose the right color temperature to ensure that the environment is comfortable and inviting. Lighting should also be used strategically to create a sense of ambiance. Different types of lighting fixtures can be used to create different moods in a space. For example, soft warm lighting can be used to create a cozy atmosphere while bright lighting can be used to focus attention or create a more energized atmosphere. In conclusion, lighting is an important element of interior design and can have many positive effects on the environment, visual perception, and health. It is important to choose the right type of lighting for a space based on its purpose, design and overall atmosphere.