2D Sketch Analysis

As a form of warm-up to the module, we were tasked to bring an object we found three-dimensionally interesting to class. Something I found interestingly-shaped was my eyedrops bottle.

Overview of Object
Front view
Top view
Bottom view
Front view with lid (right) off
2D Sketch Analysis
2D Sketch Analysis: Renu eyedrops bottle
Principal Axis

‘Principal Axis’ was one of the first terms we discussed in class. Principal axes are usually found along the longest lengths of the object in question. In the case of this eyedropper, the axis is through the centre.

After doing a quick Google search, I also found out that the main role of axes in design is to align elements. Generally, when these elements are arranged around an axis, the design feels ordered, thus creating a sense of stability, comfort, and being approachable (which is what people prefer).


Identifying the Principal Axis helps to determine if the object is symmetrical. Symmetry is defined as ‘a property of visual equivalence among elements in a form’, and is usually determined after finding the object’s line of symmetry. The eyedropper in this case, is symmetrical, given that opposing sides on the line of symmetry are identical.


‘Hierarchy’ was another important term we learned; it is defined as when ‘an element appears more important in comparison to other elements in design’. On the other hand, ‘hierarchal organisation is the simplest structure for visualising and understanding complexity’. Hierarchy is also described using three main terms – dominant (the element most present and eye-catching), subdominant (the element that contrasts with the dominant component), and subordinate (the element that adds the finishing touch).

Using the eyedropper as a case study, the dominant element is the white colour used in both the bottle and label, while the subdominant element is the dark blue colour used in the label, and the subordinate element being the turquoise ‘Bausch + Lomb’ sub-header in the label.

Mass & Void

‘Mass’ in design refers to a space that is filled. Void, on the other hand, refers to an empty space created by surrounding elements of the object. The eyedropper mainly consists of positive mass but has an area of negative void when opened.


‘Opacity’ is defined as ‘the quality or state of a body that makes it impervious to the rays of light’. The design of the eyedropper is entirely opaque, this may be be a safety precaution to protect the contents within.

Interesting details
Ergonomic and Practical Aspects

The eyedropper also possesses other qualities that make it all the more interesting. Some elements that contributed to its ergonomic design include having groves on the cap to allow users to have a better grip when opening the bottle, a safety seal that prevents leakage and exposure of the contents when being transported during the manufacturing process, and a cone-shaped tip to   help in creating droplets when used.






One Reply to “2D Sketch Analysis”

  1. Great initiative to look up some basic design principles yourself & analysis of your eyedrops bottle. 🙂  I’ve also included some online references under Syllabus, Course Reference, Readings… Go take a look.

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