[English translation]

Marvelous, tested secret for the eyes.
Take juices of all of these, viz.: of celery, fennel, burdock, rue, betony, agrimony, strawberry, germander, burnet saxifrage, eyebright, and savin, each the same amount, and mix all these juices together and take 12 grains of pepper ground very fine and put the juices with the powder in a mortar with 2 spoonfuls of honey and some urine from a little baby and incorporate everything together and it will be made. Then rub your eyes with this in the morning and evening and if, by chance, the juice has dried, add some of the said urine. Otherwise, add some juice of these herbs, viz.: ground ivy, fennel, celery, burdock, germander, sage, clover and rue and make juice of these herbs and incorporate it with the above and with this continue to bathe your eyes and soon you will be cured.

Another juice for the eyes.
Take the herb plantain with the roots when is is mature. Wash it well, grind it and extract the juice and with this rub the eyes morning and evening and soon you will be cured and the eyes will be sharpened.

Another water for the eyes and to remove pain.
Take juice of celandine, rue, fennel and plantain, 1 ounce each, zinc oxide prepared 9 times in rose water and bile of a bull, ½ dram each, and 3 ounces of cleaned honey and enough rose water. Put everything in a bottle and put it in the sun for 8 days. Then use it to treat at your pleasure and it helps you greatly, not just a little.

Another water for the eyes.
Take fennel, rue, burdock, rose and celandine, each the same amount, and of these herbs make water in the glass still and with this water wash the eyes thoroughly and it will give you good vision.

Another water for sick eyes.
Take ½ dram of zinc oxide, 4 scruples of camphor and grind them together finely. Then take half a handful of rue and put everything together to boil in a clean pot in sweet white wine until it reduces one third and when it is cool, strain it carefully, put it in a closed bottle and reboil it in a pot of water on a bain marie. Then leave it in the sun for 8 to 10 days and it will be made. Treat with it in the morning and evening to bathe the eyes. Be careful in your way of living and keep from things unfavorable to you.

Another unguent for the eyes.
Take earthworms, wash them with white wine, and cook them in ordinary old oil. Then press them well and add into this oil some marrow from the front feet of a ram and with wax make an unguent and rub yourself with this and soon the eyes will be cured and will have recovered from being everted.
But note these things that are very harmful to the eyesight, viz.: too much over-eating, too much staying up at night, too much dust, too much writing, crying, smoking, too much drinking wine excessively, luxury, and eating beans, pepper, garlic and onions and many other things.
Note that these things make the sight young, that is, juice of strawberry cures the web, fennel, rue, burdock, rosemary, celandine, honey, aloe, fennel, zinc carbonate, myrrh, good wine, mother's milk, rose water and dove's blood and many other things that I do not write down. Know that all these things are used to brighten the vision of clouded and dim eyes for us to see. Keep these in mind if you want to cure quickly.
These are the herbs that are good for our sight, cooked in water. With this water wash your face and it will help you greatly to maintain good sight always and without any impediment: celandine, eyebright, verbena, rue, fennel and pennyroyal. If you use these herbs cooked in water and wash your face with them, know that from day to day you will find yourself much more satisfied through using these tested things.

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[Italian transcript]

Secreto per li occhi mirabile e probato.
Rx. tutti questi suchi, vz.: de appio, finochio, berbena, ruta, bethonicha, agrimonia, fraule, camedrios, pinpinella, eufragia, benedicta i savina, ana, et mesta tutti questi suchi insieme et pilia 12 graneli di pepi fato in polvere sutilissimamente et metti li suchi con la polvere in uno mortaio con 2 chugiari di mele et dela orina di uno mamolo piccolo et incorpora ogni cosa insieme et sera fatto. Poi ti ongi con esso li occhi matina e sera et se per sorte se risugasse il suco tu li agiongi dela ditta orina, overamente tu li agiongerai del suco di queste erbe, vz.: edera tereste, finochio, appio, berbena, camedrios, salvia, trifoglio e ruta, ana, et di ditte erbe ne farai suco et lo incorpora col sopra ditto et con esso ti continua a bagnarti li occhi e presto guarirai.
Item sucho per li occhi.
Torai erba piantagine con le radice quando la e matura. Lavela bene, pestela e cavene suco et con esso ti ongi li occhi matina e sera e presto guarirai e si rassugherano.
Item aqua per occhi e levar il dolore.
Torai suco di cilidonia, ruta, finochio, e piantagine, ana onza j, tucia preparata 9 volte in aqua roxa e fele di uno torro, ana drama s, e mele spumato, onze iij, e aqua roxa quanto basta et ogni cosa meti in ampolla e mettila al sole per 8 di. Poi la dopera a tuo piacere e zoverati assai e non poco.
Item aqua per li occhi.
Torai finochio, ruta, berbena, roxe, cilidonia, ana, et di ditte erbe fane aqua al lambico di vetro et con ditta aqua lavati spesso li occhi e ti fara bona vista.
Item aqua per mal da occhi.
Torai tucia preparata drama s, canfora scropuli 4, e pesta minutamente insieme. Poi torai ruta m.1/2 et meterai ogni cosa insieme et farai bolire ogni cosa insieme in un pignatin novo in vino biancho amabile tanto che cali il terzo, et come la e freda, colela sutilmente et mettila in ampolla serrata et falla ribolire in una pignata di aqua a bagno maria. Poi lassela al sole 8 o 10 giorni et sara facta et la doperi matina e sera a bagnarti li occhi. Et conservati inel vivere et dele altre cose contrarie.
Item unguento da occhi.
Torai discoli teresti lavati con vino bianco e coseli in olio comune del vechio. Poi li premi bene et li agiongi in ditto olio dela midolla deli piedi dinanti di uno montone et con cera fara unguento et con esso ti ongi et presto guarirano per essere rinversati.
Ma nota che queste cose sono quelle che sono molto contraie ala parte visiva dela vista le qualle sono queste, vz., il troppo empirse el corpo, el troppo vegiare la notte, la polvere, el troppo scrivere, el piangere, el fumo, el troppo bere vino dissordinato, el luxuriare, el mangiare dele fave, el pepi, l’aglio, e le cippolle et molte altre cose.
Nota che queste cose sono quelle che giovano molto ala vista, cioe el sugo dele fraule cura la maglia, lo finochio, ruta, berbena, osmarino, cilidonia, mele, aloe, maratro, tucia, mirra, bon vino, latte di donna, aqua roxa, e sangue di colomba et molte altre cose ch’io non scrivo et sapi che tutte queste cose sogliano schiarire la parte visiva del nostro vedere deli occhi obscuri et tenebrosi et tienteli a mente se presto voi guarire.
Et queste sono quelle erbe che sono bone ala nostra vista cosendole in aqua et con la ditta aqua lavartene il viso e molto ti zovera a mantenerti sempre bona vista et senza impedimento alcuno: cilidonia, eufragia, verbena, ruta, finochio, e pulegio e usandote queste erbe cotte in la ditta aqua et lavandotene il viso, sapi che de di in di tu ti troverai molto piu contento per essere cose aprobate.