Inferred network

R(Retina) → MPN(Medial preoptic nucleus)
MPN(Medial preoptic nucleus) → PP(Peripeduncular nucleus)
PP(Peripeduncular nucleus) → PMd(Dorsal premammillary nucleus)
PMd(Dorsal premammillary nucleus) → LHA(Lateral hypothalamic area)

Support information about direct projections from Retina to Medial preoptic nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
RetinaMedial preoptic nucleus light/moderatenot knownCholera toxin conjugated to HRP
Case pg348,349, fig5a-f. Soma notes 36 female Sprague-Dawley rats weighing 200-350g. 10 microliters of CT-HRP(.20%-.40%) were injected into one eye ?behind the lens into the vitreous chamber of the eye. pressure injection over 1 min. Terminal notes Medial component of the RHT included labeled fibres and terminals found near the midline involved the medial half of the medial preoptic area terminals evident in the ventral part of the medial preoptic nucleus.
Levine JD, Weiss ML, Rosenwasser AM, Miselis RR., 1991

Support information about direct projections from Medial preoptic nucleus to Peripeduncular nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Medial preoptic nucleusPeripeduncular nucleus moderatenot knownHRP/WGA
Case table1. Soma notes WGA-HRP inj. Terminal notes not specified..
Chiba T, Murata Y., 1985
Medial preoptic nucleusPeripeduncular nucleus lightnot knownHRP/WGA
Case table1. Soma notes not specified.. Terminal notes WGA-HRP inj.
Chiba T, Murata Y., 1985

Support information about direct projections from Peripeduncular nucleus to Dorsal premammillary nucleus:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Peripeduncular nucleusDorsal premammillary nucleus lightnot knownCTB
A few retrogradely labeled cells were found in the dorsal and ventral thalamus, in which scattered marked neurons were observed consistently in the rostral part of the paraventricular nucleus (Fig. 3E), parataenial nucleus (Fig. 3E), peripeduncular nucleus (Fig. 3M), and rostral pole of the zona incerta (Fig. 3H–J).
Comoli E., Ribeiro-Barbosa E.R. & Canteras N.S., 2000

Support information about direct projections from Dorsal premammillary nucleus to Lateral hypothalamic area:
Sending structure Receiving structureStrength of projection Type of connectionTechniqueGeneral descriptionCollatorAssociated reference
Dorsal premammillary nucleusLateral hypothalamic area existsnot knownPHAL
perifornical
Canteras N.S., Swanson L.W., 1992