Local Customs
Dress can vary dramatically among countries. Short sleeves, short pants, and sandals may be appropriate in some countries and not in others. Ask the host ahead of time in order to avoid offending anyone. Also, it is wise to take at least one formal outfit, because hosts often have formal dinners at the conclusion of the project. Above all, pack comfortable, loose-fitting clothing, with shoes that offer good support. Dressing in layers is preferable.
Food and hygiene can sometimes be a problem. Only eat fruits that can be peeled, because other types may have been washed with unclean water. Refrigeration is often inadequate, so you should ensure that any meat you encounter is well cooked before you eat it. Bottled water is safest, but check to make sure the cap has an unbroken seal before drinking it.
If additional travel is planned after the project, consider bringing earplugs, because videos and music are often played loudly on bus rides between cities.
Physical touch (eg, handshake, hug, kiss on cheek) can be inappropriate in some countries but expected in others. Try to adapt to the local customs.
Giving away such things as postcards, candy, playing cards, and souvenirs to the hosts, or even to other people encountered along the way, shows appreciation.
How to Get Involved
Volunteer Optometric Services to Humanity (VOSH) International offers a state-by-state listing of upcoming eye projects, as well as resources on how to organize an eye project.
Surgical Eye Expeditions (SEE) International provides resources for ophthalmologists seeking to treat cataracts, corneal blindness, or diabetic retinopathy in people worldwide.