What is the abnormal condition in this histologic specimen?
a.Basal laminar debosits
d.Basal linear debosits
Nodular (hard) drusen consist of a focal thickening of the basement membrane of the retinal pigment epithelium. Clinically, they appear as small yellow or yellow-white spots measuring ≤63 µm in diameter. Soft drusen are larger (>63 µm) and appear less dense and more fluffy. Basal laminar deposits consist of banded basement membrane material (widespaced collagen) located between the basal plasmalemma of the retinal pigment epithelium and its basement membrane. Basal linear deposits refer to material located external to the basement membrane of the retinal pigment epithelium