  Since Bekenstein's (2004) creation of his Tensor-Vector-Scalar theory
(TeVeS), the Modified Newtonian dynamics (MOND) paradigm has been redeemed from
the embarrassment of lacking a relativistic version. One primary success of
TeVeS is that it provides an enhancement of gravitational lensing, which could
not be achieved by other MONDian theories. Following Bekenstein's work, we
investigate the phenomena of gravitational lensing including deflection angles,
lens equations and time delay. We find that the deflection angle would maintain
its value while the distance of closest approach vary in the MOND regime, this
coincides with the conclusion of Mortlock and Turner's (2001) intuitional
approach. Moreover, the scalar field, which is introduced to enhance the
deflection angle in TeVeS, contributes a negative effect on the potential time
delay. Unfortunately this phenomenon is unmeasurable in lensing systems where
we can only observe the time delay between two images for a given source.
However, this measurable time delay offers another constraint on the mass ratio
of the DM and MOND scenarios, which in general differs from that given by the
deflection angle. In other words, for a lensing system, if two masses, m_gN and
m_gM, are mutually alternatives for the deflection angles in their own
paradigm, regarding the time delay they are in general in an exclusive
relation.
