ASSESSING THE IMPACT OF D65 TUBE LIGHT ON VISUAL ACUITY AND COLOR VISION IN INDUSTRIAL SETTINGS

Abstract

Aim: This study will evaluate the effect of D65 white tube light used in colour-matching machines on visual acuity and colour vision.

Background: When light rays disperse before reaching the retina it causes many visual function defects. Light enters through the cornea, and lens, and makes a sharp image on the photosensitive layer i.e., the retina.

Methodology: A retrospective study was carried out at Kalash Textile Mills in Faisalabad. A total of 40 subjects were selected for this study. One group of 40 people who were working under the D65 tube light were selected for visual acuity by using Log MAR. The same group of 40 people who were working under the D65 white tube light took colour vision testing using D15. Informed consent was obtained from them. The procedure started with the taking of the history of the participants and then the visual acuity with the Log MAR chart. The colour vision was measured by D15. Then compared it with the initial data of visual acuity and colour vision. All the subjects that were taken had the work experience of more than one year in the quality assurance department, and were work under D65 white tube light. The paired t-test was used for statistical analysis through the statistical package for social science (SPSS) software.

Result: After applying the paired t-test the result of visual acuity was significant p<0.05(0.000) and the result of colour vision was also significant p<0.05(0.000).

Conclusion: It was concluded that D65 tube light causes disturbing visual acuity and color vision.