Low vision solutions

Question 1

What are the advantages of electonic vision enhancement over optical?

Answer 1

• Comfortable working distance
• Image can be manipulated, i.e. contrast reversal.
• Text can be re-formatted.

Question 2

Which patients benefit from reversed contrast?

Answer 2

Patients with cloudy media. (80% prefer reversed contrast)

Question 3

Which patients prefer yellow on blue or black.?

Answer 3

Purely subjective, there is no theoretical or experimental support for any imoprovment in performance.

Question 4

Upto what N point text can a Kindle enlarge?

Answer 4

approx N20

Question 5

Is comfort and fatigue better, worse or the same as paper with:

• Electronic ink (kindle)
• LCD screens

Answer 5

• Same
• Worse