glossary

Corrects presbyopia by varying optical power progressively from an upper to lower part. No lines.

One of the groups of eye drops used to treat glaucoma. They work by increasing the rate at which aqueous passes out of the eye.

Partial color deficiency affecting the ability to see the color red. There are three possible color vision deficits: red (protan), green (deutan), and blue (tritan). The suffixes ?omaly and ?opia indicate partial and complete color vision deficits, respectively. Therefore, a person who has tritanomaly will have a partial blue color vision deficit while a person who has deuteranopia will have a complete green color deficit.