Nouns ending in -a (often Latin or scientific) add -e to form the plural.
Retina is regular. It follows the -ae Addition rule.
Use plural verbs: "The retinae are ready" (not "is ready").
Yes. The plural retinae is standard across all English variants.
The word retina follows the standard English pluralization rule. When forming the plural, retina becomes retinae. This follows the -ae Addition pattern, which is one of the most common plural rules in English.
Understanding why retina becomes retinae helps with spelling and pronunciation. Nouns ending in -a (often Latin or scientific) add -e to form the plural.
When using retinae in writing, remember that it functions as a plural noun in sentences. It pairs with plural verbs and pronouns. For example: "The retinae are ready" (not "is ready"). This subject-verb agreement is essential for grammatical correctness.