Domain: Healthcare — Medicine
Target concept: Clarity Check of Ear Drops

Video generation prompt: A transparent test tube containing an appropriate amount of ofloxacin ear drops is placed on the table. The clarity of the solution and the presence of any precipitate are observed under strong light.

Evaluation guide:
(i) Target concept: Visual verification of pharmaceutical solution clarity as a stability and sterility indicator.
Minimum mechanism: Ofloxacin ear drops must exist as a homogeneous, particle-free aqueous phase under ambient conditions; any deviation (turbidity, precipitate, color change) breaks the expected physical state and violates USP <788> and pharmacopeial clarity standards.
(ii)Storyline: Frame opens on static tabletop scene → test tube enters view (or is already present) in upright, centered, stable position → liquid is motionless inside → strong directional light illuminates tube, producing visible highlights and enabling transmittance assessment → observer’s viewpoint remains fixed, allowing full-column inspection from meniscus to base → final frame confirms uniform transparency with no optical anomalies indicating particulates or phase separation.

Manual:
Experimental Procedure
1. Place a clean, transparent cylindrical test tube upright on a flat table surface.
2. Fill it with ofloxacin ear drops to approximately half to two-thirds full.
3. Illuminate the tube from above or front using strong white light.
Observation of Experimental Phenomena
The solution must appear completely colorless and transparent; no suspended particles, cloudiness, sediment, or surface film shall be visible at any point in the liquid column.
Summary of Experimental Principles
Ofloxacin ear drops must be a clear, sterile, aqueous solution; turbidity or precipitate indicates degradation, contamination, or formulation failure — rendering it unfit for clinical use.

Prompt Grounding rubric:
level_1: No test tube visible; no ear drops present; no table surface shown; no strong light illumination evident; none of the required objects or setup elements appear.
level_2: A transparent container appears but is not a standard cylindrical test tube (e.g., beaker, vial, or bottle); liquid is present but not labeled or visually identifiable as ofloxacin ear drops; table surface is partially visible but placement context is ambiguous; lighting is diffuse or absent.
level_3: A transparent cylindrical test tube is placed on a flat table surface; liquid fills the tube to a moderate level (neither empty nor overflowing); no labeling or text is required, but the visual configuration matches the posted_prompt’s core setup: tube + liquid + table + illumination context implied by clarity observation intent.
level_4: All elements from score 3 are present AND the test tube is upright and stationary; the liquid occupies approximately the lower half to two-thirds of the tube height; the background is uncluttered and consistent with an observational lab setting; lighting direction suggests top-down or frontal strong light (e.g., visible highlight on tube surface or liquid meniscus).
level_5: All elements from score 4 are present AND the test tube is centered in frame; the tube is vertically aligned with no tilt; the liquid surface is still and forms a clean concave meniscus; no extraneous objects (fingers, labels, caps, droppers) enter the frame at any time; lighting produces clear specular highlights on the glass and enables unambiguous visual assessment of solution transparency.

Scientific and Causal Correctness rubric:
level_1: Liquid is opaque, turbid, or colored (e.g., yellow, brown, milky); precipitate is clearly visible as suspended particles or settled sediment; or no liquid state is shown (e.g., solid residue only or empty tube).
level_2: Liquid appears homogeneous but has incorrect color (e.g., blue, red, green) or inconsistent viscosity (e.g., syrupy flow or gel-like texture); precipitate is absent but clarity cannot be assessed due to poor contrast or overexposure.
level_3: Liquid is colorless and transparent; no visible particles, cloudiness, or sediment observed during the video; the solution appears uniform throughout the column of liquid in the tube.
level_4: All elements from score 3 are present AND the absence of precipitate is verifiable across the entire liquid column — including bottom third (where sediment would settle) and meniscus region (where surface film or bubbles would appear); no air bubbles cling to tube walls in a way that mimics particulates.
level_5: All elements from score 4 are present AND the transparency is consistent under lighting: light passes uniformly through liquid and tube without localized scattering, refraction distortion, or haze; no interface anomalies (e.g., oil-water separation, crystalline sheen, or iridescence) that contradict ofloxacin ear drop formulation standards.

Spatiotemporal Consistency rubric:
level_1: The test tube abruptly appears or disappears, or jumps in position or size between frames; the liquid level changes with no visible cause; the lighting flickers or shifts dramatically partway through the clip; the tabletop surface warps or vanishes.
level_2: Minor spatial instability: the tube wobbles noticeably; slight camera shake causes the frame to repeatedly misalign; the light's brightness fluctuates inconsistently; a hand or other object briefly enters the frame and vanishes without performing any visible action.
level_3: The test tube stays fixed in position and orientation for the whole clip; the liquid inside is motionless (no ripples, swirling, or settling); the light source does not change direction or brightness; nothing jumps position, deforms structurally, or cuts abruptly between camera angles.
level_4: Everything required for the 3-point level holds, and in addition: the camera viewpoint stays completely static (no pan, tilt, zoom, or dolly); the tube and table keep the same relative size and alignment in every frame; any shadow cast by the tube keeps a shape and position consistent with the fixed light source.
level_5: Everything required for the 4-point level holds, and in addition: the tube, liquid, and table show no visible shaking, flicker, or blurring at any point; the tube's edges and the liquid's meniscus stay crisp and in focus throughout, with no smearing or distortion; the apparent focus/depth of field on the tube does not shift during the clip.