Figure 3. Normalized relative light transmittance of young and old bovine lens

The transmittance (%) on the Y axis versus the temperature (°C) on the X axis (pre-cold cataract, cold cataract, and post-cold cataract). The values represent normalized mean transmittance; the error bars represent the standard error of the mean. There is a temperature effect (repeated-measures analysis of variance; p<0.05). Both young (18 weeks) and old (10 year) lenses show a significant decrease in relative light transmittance during cold cataract (4 °C). However, there is no significant difference in relative light transmittance measurements at the cold cataract stage between the two groups (p>0.05).