![]() ![]() The size of human hair in the scalp and part of the face ranges between 0.06 and 0.1 mm in diameter. The size of the target detail (mm) and working distance (cm) were used to arrive at the visual acuity demand for the various tasks. ![]() Observations on the work environment include visibility (the relationship between the size of detail working distances, contrast and time available for viewing the task), the type of lighting in use, illuminance level and presence of any hazards were also recorded during VTA. The task-related clinical requirements such as the demand for binocular vision and stereopsis, visual fields and color vision were obtained. Other task-related factors such as working position, the direction of gaze and the need for special accuracy/care during the task performance were recorded. During VTA, observations on the size of the critical detail i.e., size of the hair, and working distance i.e., the distance at which the various tasks were performed, were made. Phase 1: After acquiring permission from proprietors, Visual Task Analysis (VTA) was carried out by two occupational optometrists in three different barbershops, using Grundy's task analysis grid. Phase 3: Assessment of spectacle compliance This study aimed to understand the visual demand associated with the tasks performed by hairdressers and to estimate the vision standards, match the visual ability to the visual demand and understand the spectacle compliance at work. ![]() There were no studies on understanding the visual demand for this occupation. Due to the repetitive nature of the tasks and poor ergonomics, work-related lower back pain, followed by the neck, shoulder, and wrist pain were commonly observed. If the hairdresser is not meeting the visual demand, it will affect his productivity and customer satisfaction.Ĭommonly reported visual symptoms were headache, followed by blurred vision and ocular symptoms like itching, irritation, and tearing. Uncorrected refractive error and presbyopia are known to affect task performance and productivity. Hairdressing is a visually intense task in terms of continuous near work which demands adequate near vision and associated visual skills. When the visual ability of the individual does not match the visual standard, it will affect the visual task performance and thereby the productivity. In addition to that, the visual and ocular health of the individual also determines the ability, and accuracy of the task performance as well as the safety of the individual at work. The abilities of the individuals to perform their tasks at work are determined by factors such as knowledge, experience, skills, and relevant training. Vision standard is the minimum expected level of vision that is required for the efficient and safe performance of tasks of an individual at the workplace. Visual ability is the individual's personal ability to accomplish a visually demanding task. Visual demand is defined as the vision requirement for each particular task that varies from one occupation to another. Though modern salons are emerging, traditional barbershops are still the major players in this field, mostly dominated by male workers. Their work routine includes hair cutting/styling, moustache and beard trimming/shaving, and hair dyeing. According to the International Standard Classification of Occupation (ISCO,2008), hairdressers are defined as workers who cut, style, color, straighten and permanently wave hair, shave or trim facial hair and treat scalp conditions.
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