Besides the fact that children need further exposure to the light/sun in order to develop their bones, light facilitates enhanced growth and development. Therefore, it is an essential element in the eyes of the children as well as in their entire bodies. The variations in the intensity of light in the incubators enabled the infants to develop their adaptation into embracing light into their bodies and eyes. Sound is the other aspect, which appeared to have some varying effects on premature babies. According to Huttenlocher, (2002), sound is a transfer of energy through the air. It is transferred as an energy that can only be detected by the ears. It is a wave of energy, which carries certain aspects as that involved with communication. Like any other aspect, which affects premature babies, sound is an environmental aspect. It is variable and can be transformed from one notion to another with the intention of varying it in the environment. In many cases, sound increases the negative effects than positive (Huttenlocher, 2002). This is more so with infants and premature babies.

As claimed by Bradford, (2000), Sound is vulnerable to the absorption of a young and developing infant, who is premature. Sound, as a form of energy, has the capacity to destroy part of the organs or cells in the ears of an individual. This is when sound of intensified capacities gets to the ears of an individual. Naturally, too much sound destroys the eardrum of an individual. As observed in NICU, most premature children appeared to react negatively and stressfully to the effects of sound. According to Bradford, the normality of hearing by the premature babies is interfered by Sound. It is sentimental to their natural living and response to nature through hearing. Just as it happens with sight, sound is not necessary destructive among young and premature babies. The hearing mechanism is not well developed and mature for the premature babies to respond well to the effects of sound from the environment. This is because the environment is full of many kinds of sounds. Sound causes stress to such babies. They cause irritation, discomfort, and pain to the premature babies. Babies will appear to turn side by side in the case of high tones or loud music within the incubators (Bradford, 2000).

Dunham reiterates the fact that when the infant or premature babies are ill or suffer from other painful...

They need total calm in order to relax and may be catnap. Therefore, sound does not make them feel better. It strains them beyond their hearing capacities can manage to sustain (Dunham, 1955).
Apart from the facts that sound is destructive and unpleasant to most premature babies in the incubators; it is of importance to the management of the environment within the incubators. Any increase or presence of sound results in the development of certain behaviors when the infant or premature baby experiences some complications like pain or discomfort. In this case, the management will be able to realize between those kids who are normal, and thus separate them from those who are not feeling well. Babies at this situation are not able to speak or demonstrate cases of pain or sickness. This acts as one of the ways of doing this (Tecklin, 2008).

In conclusion, sound and light are sentimental to the natural growth and development of premature babies. Light is sensible, irritating, and disturbing to the premature babies. Nonetheless, it is used to do other useful activities within the incubators as a continuance of oxygen, and other respiratory activities within the premature babies. On the other hand, sound is stressing and destructive to the baby's organism. Nonetheless, it is used to depict illness and discomfort among premature babies.