. 2013 Feb 7;54(2):1095–1105. doi: 10.1167/iovs.12-10619

Table 3. .

Accommodative Change in Biometric Values for the Current Study Compared to Other In Vivo Studies in Human Adults

Structure		Change per Diopter of Accommodation
Structure		Current Study Findings and Method	Previous Studies Findings and Method*
Crystalline lens	Thickness (mm)	+0.064 (OCT)	+0.042 to +0.080 (OCT, US, ph, or MRI)^{27,41,47,59–61,65–67}
	Thickness (mm)	+0.065 (MRI)
	Equatorial diameter (mm)	−0.075 (MRI)	−0.046 to −0.090 (MRI)^41,47,51,60
Ciliary muscle	Thickness (mm)	+0.026 CMTMAX (OCT)
		+0.013 CMT1 (OCT)	+0.071 CM25 (OCT)⁵⁸
		−0.011 CMT2 (OCT)	0 to −0.007 CM2 (OCT)⁵⁸
		−0.015 CMT3 (OCT)
	Ring diameter (mm)	−0.105 (MRI)	−0.063 to −0.088 (MRI)^47,52

ph indicates phakometry, Scheimpflug photography, or similar optical method. CM25 is located at a point 25% of the estimated muscle length and roughly corresponds to the CMT1 position. CM2 is equivalent to CMT2.

References 41, 47, 51, 52, and 64 measured accommodative change with stimulus demand but did not measure accommodative response. The values provided in the table are calculated as responses per diopter of accommodative stimulus demand. The values from the current study are calculated from accommodative response.