well you know, you can raise $$ on your own for your travel costs and even do it for academic credit so your medical school can pay. i know that many volunteers don't even have to pay for travel costs out of pocket because their school pays and they get credit for unite for sight as their clinical rotation.
don't overlook that $1400 isn't a lot to raise to give people back restored sight and their livelihoods.
also be aware that you get what you pay for. unite for sight is the only organization that i know of that doesn't require an administrative fee and i don't know of any reputable organization that wouldnt require that. think about what you want out of your abroad experience: something well organized? something where you're making a difference? something where youre prepared going into it and know what to expect? in general, an organization can't give you a well organized trip or give you preparation unless they have staff. their staff have to be paid. where does the payment come from? administrative fees.
but unite for sight doesn't have administrative fees because theyre so efficient and use all of the fundraising (100%!!) on eye care programs.
sure, ive heard of rinky dink NGOs based in Africa that accept volunteers for low rates, but a lot of them are scams that take your money "for housing" (at very high housing rates in comparison to the house stays where you live) and don't have you do anything useful or productive.
and you shouldnt think of fundraising as an issue to keep you from volunteering with unite for sight. dont you want to make the greatest difference in other peoples lives as possible? with unite for sight, you fundraise to give people their sight back and help abroad to give their sight back. dont forget why you should want to volunteer: to help the greatest number of people possible.
in regards to Tilgana it is certainly a great facility that you found but i think they only take residents and ophthalmologist, or maybe those who already are applying for ophtho residency. and nepal isn't a safe country to visit so be careful. the US State Department has nepal in their short list of places where americans should not travel. their website says nepal qualifies for "Travel Warnings are issued to describe long-term, protracted conditions that make a country dangerous or unstable. A Travel Warning is also issued when the U.S. Government's ability to assist American citizens is constrained due to the closure of an embassy or consulate or because of a drawdown of its staff. The countries listed below meet those criteria." i want to give you a headsup assuming you might not have known about this.